Initial commit.

58 files changed, 19102 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3ebb166
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+upload.sh
+*.swp
+*.min.js
+*.min.css
+*.pyc
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..8f5e318
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,32 @@
+include server.cfg
+
+.PHONY: all clean upload deploy update-collection
+
+all:
+	@$(MAKE) -C frontend
+
+clean:
+	@$(MAKE) -C frontend clean
+	@$(MAKE) -C backend clean
+
+upload: all
+	@echo "    RSYNC   $(SERVER):$(SERVER_UPLOAD_PATH)"
+	@rsync -aizm --delete-excluded --exclude=*.cfg --exclude=*.conf --filter="P app.cfg" --exclude=*.swp --exclude=.git* --exclude=frontend/bin/ \
+		--exclude=Makefile --exclude=*.pyc --include=scripts.min.js --include=styles.min.css --exclude=*.js --exclude=*.css \
+		. "$(SERVER):$(SERVER_UPLOAD_PATH)"
+
+deploy: upload
+	@echo "    DEPLOY  $(SERVER):$(SERVER_DEPLOY_PATH)"
+	@ssh -t "$(SERVER)" "set -ex; \
+		umask 027; \
+		sudo rsync -rim --delete --filter='P zmusic.db' '$(SERVER_UPLOAD_PATH)/' '$(SERVER_DEPLOY_PATH)'; \
+		sudo chown -R uwsgi:nginx '$(SERVER_DEPLOY_PATH)'; \
+		sudo find '$(SERVER_DEPLOY_PATH)' -type f -exec chmod 640 {} \;; \
+		sudo find '$(SERVER_DEPLOY_PATH)' -type d -exec chmod 750 {} \;; \
+		sudo /etc/init.d/uwsgi.zmusic restart"
+
+update-collection:
+	@echo "    RSYNC   $(SERVER):$(SERVER_COLLECTION_PATH)"
+	@rsync -avzPi --delete-excluded --delete-after --fuzzy --exclude=.directory '$(LOCAL_COLLECTION_PATH)/' '$(SERVER):$(SERVER_COLLECTION_PATH)'
+	@echo "    SCAN    $(SERVER)"
+	@curl 'http://$(SERVER)/scan?username=$(ADMIN_USERNAME)&password=$(ADMIN_PASSWORD)'
diff --git a/backend/Makefile b/backend/Makefile
new file mode 100644
index 0000000..89d8d06
--- /dev/null
+++ b/backend/Makefile
@@ -0,0 +1,4 @@
+.PHONY: clean
+
+clean:
+	@echo "    RM     " $(shell find . -iname '*.pyc' -print -delete)
diff --git a/backend/app.cfg b/backend/app.cfg
new file mode 100644
index 0000000..0bf7691
--- /dev/null
+++ b/backend/app.cfg
@@ -0,0 +1,16 @@
+SQLALCHEMY_DATABASE_URI = 'sqlite:////tmp/zmusic.db'
+SQLALCHEMY_ECHO = False
+SECRET_KEY = 'this key is not secret any more since you are reading it'
+DEBUG = True
+ACCEL_STATIC_PREFIX = False # With NGINX: '/static/'
+ACCEL_MUSIC_PREFIX = False # With NGINX: '/music/'
+
+STATIC_PATH = '../frontend'
+MUSIC_PATH = '/home/zx2c4/Music'
+EXCLUDE_PATHS = [ 'something/personal/' ]
+
+MUSIC_USER = 'mrmusic'
+MUSIC_PASSWORD = 'ilovemusics'
+
+ADMIN_USER = 'msadmin'
+ADMIN_PASSWORD = '2manyservers'
diff --git a/backend/local_server.py b/backend/local_server.py
new file mode 100755
index 0000000..4de9033
--- /dev/null
+++ b/backend/local_server.py
@@ -0,0 +1,6 @@
+#!/usr/bin/env python2
+
+from zmusic import app
+
+if __name__ == '__main__':
+	app.run()
diff --git a/backend/nginx.conf b/backend/nginx.conf
new file mode 100644
index 0000000..611943f
--- /dev/null
+++ b/backend/nginx.conf
@@ -0,0 +1,74 @@
+user nginx nginx;
+worker_processes 4;
+
+error_log /var/log/nginx/error_log info;
+
+events {
+	worker_connections 1024;
+	use epoll;
+}
+
+http {
+	include /etc/nginx/mime.types;
+	default_type application/octet-stream;
+
+	log_format main
+		'$remote_addr - $remote_user [$time_local] '
+		'"$request" $status $bytes_sent '
+		'"$http_referer" "$http_user_agent" '
+		'"$gzip_ratio"';
+
+	client_header_timeout 10m;
+	client_body_timeout 10m;
+	send_timeout 10m;
+
+	connection_pool_size 256;
+	client_header_buffer_size 1k;
+	large_client_header_buffers 4 2k;
+	request_pool_size 4k;
+
+	gzip on;
+	gzip_min_length 512;
+	gzip_buffers 4 8k;
+	gzip_types text/plain application/json application/javascript application/x-javascript text/css text/javascript;
+
+	output_buffers 1 32k;
+	postpone_output 1460;
+
+	sendfile on;
+	tcp_nopush on;
+	tcp_nodelay on;
+
+	keepalive_timeout 75 20;
+
+	ignore_invalid_headers on;
+
+	index index.html;
+
+	server_tokens off;
+
+	server {
+		listen 80;
+		server_name "";
+		return 404;
+	}
+	server {
+		listen 80;
+		server_name music.zx2c4.com;
+		access_log /var/log/nginx/zmusic.access_log main;
+		error_log /var/log/nginx/zmusic.error_log info;
+		location / {
+			include uwsgi_params;
+			uwsgi_pass unix:/tmp/uwsgi-zmusic.sock;
+		}
+		location /static/ {
+			internal;
+			alias /var/www/uwsgi/zmusic/frontend/;
+		}
+		location /music/ {
+			internal;
+			add_header X-Content-Duration $upstream_http_x_content_duration;
+			alias /mnt/music/;
+		}
+	}
+}
diff --git a/backend/zmusic/__init__.py b/backend/zmusic/__init__.py
new file mode 100644
index 0000000..0855b62
--- /dev/null
+++ b/backend/zmusic/__init__.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+
+from flask import Flask
+from flask_sqlalchemy import SQLAlchemy
+from flask_login import LoginManager
+import os
+import sys
+import pkgutil
+
+app = Flask(__name__)
+app.config.from_pyfile(os.path.join(os.path.dirname(os.path.abspath(__file__)), '../app.cfg'))
+
+db = SQLAlchemy(app)
+
+login_manager = LoginManager()
+import zmusic.login
+login_manager.setup_app(app)
+
+import zmusic.endpoints
diff --git a/backend/zmusic/database.py b/backend/zmusic/database.py
new file mode 100644
index 0000000..3e61b74
--- /dev/null
+++ b/backend/zmusic/database.py
@@ -0,0 +1,80 @@
+from zmusic import db
+from uuid import uuid4
+import time
+
+class Song(db.Model):
+	__tablename__ = 'songs'
+
+	filename = db.Column(db.String, primary_key=True)
+	id = db.Column(db.String, nullable=False, index=True)
+	title = db.Column(db.String)
+	album = db.Column(db.String)
+	artist = db.Column(db.String)
+	mimetype = db.Column(db.String)
+	year = db.Column(db.Integer)
+	track = db.Column(db.Integer)
+	disc = db.Column(db.Integer)
+	lastmodified = db.Column(db.Integer)
+	filesize = db.Column(db.Integer)
+	length = db.Column(db.Float)
+
+	def sync_picard(self, songdict):
+		self.id = songdict["id"]
+		self.filename = songdict["filename"]
+		self.lastmodified = songdict["filestat"].st_mtime
+		self.filesize = songdict["filestat"].st_size
+		self.title = songdict["title"]
+		self.album = songdict["album"]
+		self.artist = songdict["artist"]
+		self.mimetype = songdict["mimetype"]
+		self.length = songdict["length"]
+		try:
+			self.year = int(songdict["date"].split("-")[0])
+		except:
+			self.year = 0
+		try:
+			self.track = int(songdict["tracknumber"])
+		except:
+			self.track = 0
+		try:
+			self.disc = int(songdict["discnumber"])
+		except:
+			self.disc = 0
+	
+	def to_dict(self):
+		return { "id": self.id, "track": self.track, "title": self.title, "artist": self.artist,
+			 "album": self.album, "mimetype": self.mimetype, "length": self.length }
+
+
+class Download(db.Model):
+	__tablename__ = 'downloads'
+	
+	id = db.Column(db.String, primary_key=True)
+	leader_id = db.Column(db.String)
+	time = db.Column(db.Integer)
+	ip = db.Column(db.String, index=True)
+	useragent = db.Column(db.String)
+	song_id = db.Column(db.String, db.ForeignKey(Song.id))
+	artist = db.Column(db.String)
+	album = db.Column(db.String)
+	title = db.Column(db.String)
+	is_zip = db.Column(db.Boolean)
+
+	def __init__(self, song, request):
+		self.artist = song.artist
+		self.album = song.album
+		self.title = song.title
+		self.song_id = song.id
+		self.time = int(round(time.time() * 100000))
+		self.useragent = request.headers.get('User-Agent')
+		ip = request.remote_addr
+		if (ip.find('::ffff:') == 0 and len(ip) > len('::ffff:')):
+			ip = ip[len('::ffff:'):]
+		self.ip = ip
+		self.id = str(uuid4())
+		is_zip = False
+	
+	def to_dict(self):
+		return { "artist": self.artist, "album": self.album, "title": self.title,
+			 "id": self.song_id, "time": self.time, "useragent": self.useragent,
+			 "ip": self.ip }
diff --git a/backend/zmusic/endpoints/__init__.py b/backend/zmusic/endpoints/__init__.py
new file mode 100644
index 0000000..76287ed
--- /dev/null
+++ b/backend/zmusic/endpoints/__init__.py
@@ -0,0 +1,7 @@
+import pkgutil
+
+__all__ = []
+for loader, module_name, is_pkg in pkgutil.walk_packages(__path__):
+	__all__.append(module_name)
+	module = loader.find_module(module_name).load_module(module_name)
+	globals()[module_name] = module
diff --git a/backend/zmusic/endpoints/error.py b/backend/zmusic/endpoints/error.py
new file mode 100644
index 0000000..74e7cd2
--- /dev/null
+++ b/backend/zmusic/endpoints/error.py
@@ -0,0 +1,13 @@
+from zmusic import app
+from flask import jsonify
+from werkzeug.exceptions import default_exceptions
+from werkzeug.exceptions import HTTPException
+
+def json_error(ex):
+	status_code = (ex.code if isinstance(ex, HTTPException) else 500)
+	response = jsonify(error=str(ex), status=status_code)
+	response.status_code = status_code
+	return response
+
+for code in default_exceptions.iterkeys():
+	app.error_handler_spec[None][code] = json_error
diff --git a/backend/zmusic/endpoints/login.py b/backend/zmusic/endpoints/login.py
new file mode 100644
index 0000000..fdf481d
--- /dev/null
+++ b/backend/zmusic/endpoints/login.py
@@ -0,0 +1,28 @@
+from zmusic import app
+from zmusic.login import query_is_music_user, query_is_admin_user, login_required, music_user, admin_user
+from flask_login import current_user, login_user, logout_user
+from flask import jsonify, request
+
+@app.route('/login', methods=['POST'])
+def login():
+	success = False
+	if query_is_music_user(request.form):
+		success = login_user(music_user, remember=True)
+	elif query_is_admin_user(request.form):
+		success = login_user(admin_user, remember=True)
+	response = jsonify(loggedin=success)
+	response.cache_control.no_cache = True
+	return response
+
+@app.route('/login', methods=['GET'])
+def login_check():
+	response = jsonify(loggedin=current_user.is_authenticated())
+	response.cache_control.no_cache = True
+	return response
+
+@app.route('/logout')
+@login_required
+def logout():
+	response = jsonify(loggedout=logout_user())
+	response.cache_control.no_cache = True
+	return response
diff --git a/backend/zmusic/endpoints/query.py b/backend/zmusic/endpoints/query.py
new file mode 100644
index 0000000..6f15ea3
--- /dev/null
+++ b/backend/zmusic/endpoints/query.py
@@ -0,0 +1,60 @@
+from zmusic import app
+from zmusic.login import login_required
+from zmusic.database import Song
+from flask import request, jsonify
+import shlex
+
+@app.route('/query', defaults={ "query": "" })
+@app.route('/query/', defaults={ "query": "" })
+@app.route('/query/<query>')
+@login_required
+def query(query):
+	offset = request.args.get("offset", 0, int)
+	limit = request.args.get("limit", None, int)
+	if offset < 0:
+		offset = 0
+	if limit is not None and limit < 0:
+		limit = 0
+
+	filter_map = { "artist": Song.artist, "album": Song.album, "title": Song.title, "id": Song.id }
+	filter_chain = None
+	try:
+		terms = shlex.split(query)
+	except:
+		return jsonify(total=0, offset=offset, songs=[])
+
+	for term in terms:
+		field = term.split(':', 1)
+		if len(field) == 1 or field[0] not in filter_map:
+			word = term.strip().replace('*', "%")
+			if len(word) == 0:
+				continue
+			term_filter = Song.id == word
+			word = "%" + word + "%"
+			term_filter |= Song.artist.like(word)
+			term_filter |= Song.album.like(word)
+			term_filter |= Song.title.like(word)
+		else:
+			term_filter = filter_map[field[0]].like(field[1].replace('*', '%'))
+		if filter_chain is None:
+			filter_chain = term_filter
+		else:
+			filter_chain &= term_filter
+
+	query = Song.query
+	if filter_chain is not None:
+		query = query.filter(filter_chain)
+	total = query.count()
+	query = query.order_by(Song.artist).order_by(Song.year).order_by(Song.album).order_by(Song.disc).order_by(Song.track).order_by(Song.title)
+	query = query.offset(offset)
+	if limit != None:
+		query = query.limit(limit)
+ 
+	songs = []
+	for song in query:
+		if len(song.title.strip()) == 0:
+			song.title = "Untitled Song"
+		if song.track == 0:
+			song.track = None
+		songs.append(song.to_dict())
+	return jsonify(total=total, offset=offset, songs=songs)
diff --git a/backend/zmusic/endpoints/scan.py b/backend/zmusic/endpoints/scan.py
new file mode 100644
index 0000000..5a85714
--- /dev/null
+++ b/backend/zmusic/endpoints/scan.py
@@ -0,0 +1,57 @@
+from zmusic.login import admin_required
+from zmusic import app, db
+from zmusic.database import Song
+from zmusic.picard.formats import open as readtags
+from flask import Response
+import time
+import os
+
+@app.route('/scan')
+@admin_required
+def scan_music():
+	db.create_all();
+	def do_scan():
+		yield "%i | Begin.\n" % int(time.time())
+		all_files = {}
+		excludes = [os.path.join(app.config["MUSIC_PATH"], item) for item in app.config["EXCLUDE_PATHS"]]
+		for root, dirs, files in os.walk(app.config["MUSIC_PATH"]):
+			if len(files) != 0:
+				yield "%i | Scanning [%s].\n" % (int(time.time()), root)
+			for name in files:
+				name = os.path.join(root, name)
+
+				skip = False
+				for exclude in excludes:
+					if name.find(exclude) == 0:
+						skip = True
+						break
+				if skip:
+					yield "%i | Excluded [%s].\n" % (int(time.time()), name)
+					continue
+
+				all_files[name] = True
+
+				song = Song.query.get(name)
+				if song != None:
+					stat = os.stat(name)
+					if song.lastmodified == stat.st_mtime and song.filesize == stat.st_size:
+						continue
+				else:
+					song = Song()
+				tags = readtags(name)
+				if tags == None:
+					yield "%i | Skipping [%s].\n" % (int(time.time()), name)
+					continue
+				song.sync_picard(tags)
+				db.session.add(song)
+				yield "%i | Adding [%s].\n" % (int(time.time()), song.filename)
+		for song in db.session.query(Song.filename):
+			if song.filename not in all_files:
+				Song.query.filter(Song.filename == song.filename).delete(False)
+				yield "%i | Removing [%s].\n" % (int(time.time()), str(song.filename))
+		db.session.commit()
+		yield "%i | Done.\n" % int(time.time())
+	response = Response(do_scan(), mimetype="text/plain", direct_passthrough=True)
+	response.headers.add("X-Accel-Buffering", "no")
+	response.cache_control.no_cache = True
+	return response
diff --git a/backend/zmusic/endpoints/song.py b/backend/zmusic/endpoints/song.py
new file mode 100644
index 0000000..25558b9
--- /dev/null
+++ b/backend/zmusic/endpoints/song.py
@@ -0,0 +1,45 @@
+from zmusic import app, db
+from zmusic.database import Song, Download
+from zmusic.login import login_required
+from zmusic.streams import send_process, send_file_partial
+from zmusic.filename import generate_download_filename
+from zmusic.picard.file import MIMETYPES as mimetypes
+from flask import abort, request
+from werkzeug.datastructures import Headers
+import os
+
+@app.route('/song/<id>.<ext>')
+@login_required
+def song(id, ext):
+	song = db.session.query(Song.id, Song.filename, Song.length, Song.mimetype, Song.artist, Song.album, Song.title, Song.track).filter(Song.id == id).first()
+	if song == None or not os.path.exists(song.filename):
+		return abort(404)
+	headers = Headers()
+	headers.add("X-Content-Duration", song.length)
+	headers.add("X-Accel-Buffering", "no")
+	range_header = request.headers.get('Range', None)
+	if range_header is not None:
+		range_header = range_header.split("-")
+		try:
+			range_header = intval(range_header[0])
+		except:
+			range_header = None
+	if range_header is None or range_header == 0:
+		db.session.add(Download(song, request))
+		db.session.commit()
+	
+	ext = ext.lower()
+
+	for extension, mimeset in mimetypes.items():
+		if song.mimetype in mimeset and extension == ext:
+			return send_file_partial(song.filename, mimetype=song.mimetype, attachment_filename=generate_download_filename(song, ext), headers=headers)
+
+	if ext not in [ "ogg", "mp3", "flac", "wav", "webm" ]:
+		return abort(404)
+	transcode_options = [ 'ffmpeg', '-loglevel', 'quiet', '-i', song.filename, '-f', ext, '-y' ];
+	if ext == "ogg" or ext == "webm":
+		transcode_options.extend([ '-acodec', 'libvorbis', '-aq', '5' ])
+	elif ext == "mp3":
+		transcode_options.extend([ '-ab', '160k' ])
+	transcode_options.append('-')
+	return send_process(transcode_options, mimetype=mimetypes[ext][0], attachment_filename=generate_download_filename(song, ext), headers=headers)
diff --git a/backend/zmusic/endpoints/static.py b/backend/zmusic/endpoints/static.py
new file mode 100644
index 0000000..30a0d46
--- /dev/null
+++ b/backend/zmusic/endpoints/static.py
@@ -0,0 +1,19 @@
+from zmusic import app
+from flask import Response, send_from_directory
+from mimetypes import guess_type
+import os
+
+@app.route('/', defaults={ "filename": "index.html" })
+@app.route('/<path:filename>')
+def index(filename):
+	static_dir = os.path.normpath(os.path.join(os.path.dirname(os.path.abspath(__file__)), "../..", app.config["STATIC_PATH"]))
+	if app.config["ACCEL_STATIC_PREFIX"]:
+		mimetype = None
+		types = guess_type(os.path.join(static_dir, filename))
+		if len(types) != 0:
+			mimetype = types[0]
+		response = Response(mimetype=mimetype)
+		response.headers.add("X-Accel-Redirect", os.path.join(app.config["ACCEL_STATIC_PREFIX"], filename))
+		return response
+	else:
+		return send_from_directory(static_dir, filename)
diff --git a/backend/zmusic/endpoints/stats.py b/backend/zmusic/endpoints/stats.py
new file mode 100644
index 0000000..13149ca
--- /dev/null
+++ b/backend/zmusic/endpoints/stats.py
@@ -0,0 +1,38 @@
+from zmusic import app, db
+from zmusic.database import Download
+from zmusic.login import admin_required
+from flask import jsonify
+import socket
+
+@app.route('/stats')
+@app.route('/stats/')
+@admin_required
+def stats_all_ips():
+	ips = []
+	socket.setdefaulttimeout(2)
+
+	for ip in db.session.query(Download.ip).group_by(Download.ip).order_by(db.desc(db.func.max(Download.time))):
+		try:
+			host = socket.gethostbyaddr(ip.ip)[0]
+		except:
+			host = None
+		ips.append({ "ip": ip.ip, "host": host })
+	response = jsonify(downloaders=ips)
+	response.cache_control.no_cache = True
+	return response
+
+@app.route('/stats/<ip>')
+@admin_required
+def stats_for_ip(ip):
+	songlist = []
+	for song in Download.query.filter((Download.ip == ip) & (Download.leader_id == None)).order_by(Download.leader_id).order_by(db.desc(Download.time)):
+		if song.is_zip:
+			zipsongs = [song.to_dict()]
+			for zipsong in Download.query.filter(Download.leader_id == song.id).order_by(Download.time):
+				zipsongs.append(zipsong.to_dict())
+			songlist.append({ "zip": zipsongs })
+		else:
+			songlist.append({ "song": song.to_dict() })
+	response = jsonify(downloads=songlist)
+	response.cache_control.no_cache = True
+	return response
diff --git a/backend/zmusic/endpoints/zip.py b/backend/zmusic/endpoints/zip.py
new file mode 100644
index 0000000..e281f6f
--- /dev/null
+++ b/backend/zmusic/endpoints/zip.py
@@ -0,0 +1,108 @@
+from zmusic import app, db
+from zmusic.login import login_required
+from zmusic.database import Song, Download
+from zmusic.filename import generate_download_filename
+from flask import Response, request
+from zlib import crc32 as crc32sum
+from struct import pack
+import time
+import os
+
+@app.route('/zip', methods=['POST'])
+@login_required
+def zipfile():
+	hashes = request.form.getlist("hash", str)
+	if len(hashes) == 0:
+		return abort(404)
+	filter = None
+	for hash in hashes:
+		if filter is None:
+			filter = Song.id == hash
+		else:
+			filter |= Song.id == hash
+	songs = db.session.query(Song.id, Song.filename, Song.artist, Song.album, Song.title, Song.track).filter(filter)
+	if songs.count() == 0:
+		return abort(404)
+	
+	first_id = None
+	for song in songs:
+		download = Download(song, request)
+		if first_id is None:
+			first_id = download.id
+		else:
+			download.leader_id = first_id
+		download.is_zip = True
+		db.session.add(download)
+	db.session.commit()
+	
+	def do_zip():
+		central_directory = ""
+		offset = 0
+		count = 0
+		for song in songs:
+			if not os.path.exists(song.filename):
+				continue
+			count += 1
+			filename, ext = os.path.splitext(song.filename)
+			if ext[0] == '.' and len(ext) > 1:
+				ext = ext[1:]
+			filename = generate_download_filename(song, ext)
+			file = open(song.filename, 'rb')
+			yield "\x50\x4b\x03\x04"			#local file header signature
+			yield "\x14\x00"				#version needed to extract
+			yield "\x00\x00"				#general purpose bit flag
+			yield "\x00\x00"				#compression method
+			yield "\x00\x00"				#last mod file time
+			yield "\x00\x00"				#last mod file date
+			crc32 = 0
+			while True:
+				data = file.read(8192)
+				if not data:
+					break
+				crc32 = crc32sum(data, crc32)
+			file.seek(0)
+			crc32 = pack("<I", crc32 & 0xffffffff)
+			yield crc32					#crc-32
+			size = os.path.getsize(song.filename)
+			yield pack("<I", size)				#compressed size
+			yield pack("<I", size)				#uncompressed size
+			yield pack("<H", len(filename))			#file name length
+			yield "\x00\x00"				#extra field length
+			yield filename					#file name
+			while True:
+				data = file.read(8192)
+				if not data:
+					break
+				yield data				#file data
+			central_directory += "\x50\x4b\x01\x02"
+			central_directory += "\x00\x00"			#version made by
+			central_directory += "\x14\x00"			#version needed to extract
+			central_directory += "\x00\x00"			#gen purpose bit flag
+			central_directory += "\x00\x00"			#compression method
+			central_directory += "\x00\x00"			#last mod file time
+			central_directory += "\x00\x00"			#last mod file date
+			central_directory += crc32			#crc-32
+			central_directory += pack("<I", size)		#compressed filesize
+			central_directory += pack("<I", size)		#uncompressed filesize
+			central_directory += pack("<H", len(filename))	#length of filename
+			central_directory += "\x00\x00"			#extra field length
+			central_directory += "\x00\x00"			#file comment length
+			central_directory += "\x00\x00"			#disk number start
+			central_directory += "\x00\x00"			#internal file attributes
+			central_directory += "\x20\x00\x00\x00"		#external file attributes - 'archive' bit set (32)
+			central_directory += pack("<I", offset)		#relative offset of local header
+			offset += 30 + len(filename) + size
+			central_directory += filename
+			file.close()
+		yield central_directory					#central directory
+		yield "\x50\x4b\x05\x06"				#end of central directory signature	
+		yield "\x00\x00"					#number of this disk
+		yield "\x00\x00"					#number of the disk with the start of the central directory
+		yield pack("<H", count)					#number of entries on disk
+		yield pack("<H", count) 				#number of entries
+		yield pack("<I", len(central_directory))		#size of central directory
+		yield pack("<I", offset)				#offset to start of central directory
+		yield "\x00\x00"					#zip comment size
+	response = Response(do_zip(), mimetype="application/zip", direct_passthrough=True)
+	response.headers.add('Content-Disposition', 'attachment', filename="ZX2C4Music-Download-" + str(int(time.time())) + ".zip")
+	return response
diff --git a/backend/zmusic/filename.py b/backend/zmusic/filename.py
new file mode 100644
index 0000000..4a57611
--- /dev/null
+++ b/backend/zmusic/filename.py
@@ -0,0 +1,15 @@
+from werkzeug.utils import secure_filename
+
+def generate_download_filename(song, ext):
+	filename = []
+	if song.artist is not None and len(song.artist.strip()) != 0:
+		filename.append(song.artist.strip())
+	if song.album is not None and len(song.album.strip()) != 0:
+		filename.append(song.album.strip())
+	if song.track != 0:
+		filename.append(str(song.track))
+	if song.title is None or len(song.title.strip()) == 0:
+		filename.append("Untitled Track")
+	else:
+		filename.append(song.title.strip())
+	return secure_filename(" - ".join(filename) + "." + ext)
diff --git a/backend/zmusic/login.py b/backend/zmusic/login.py
new file mode 100644
index 0000000..e625736
--- /dev/null
+++ b/backend/zmusic/login.py
@@ -0,0 +1,50 @@
+from zmusic import app, login_manager
+from flask_login import current_user, UserMixin
+from flask import request, abort
+from functools import wraps
+
+class User(UserMixin):
+	def __init__(self, id, admin=False):
+		self.admin = admin
+		self.id = id
+
+music_user = User("user")
+admin_user = User("admin", True)
+
+@login_manager.user_loader
+def load_user(id):
+	if id == "user":
+		return music_user
+	elif id == "admin":
+		return admin_user
+	return None
+
+@login_manager.unauthorized_handler
+def unauthorized():
+	return abort(403)
+
+def login_required(fn):
+	@wraps(fn)
+	def decorated_view(*args, **kwargs):
+		if query_is_admin_user(request.args) or query_is_music_user(request.args) or current_user.is_authenticated():
+			return fn(*args, **kwargs)
+		return app.login_manager.unauthorized()
+	return decorated_view
+
+def admin_required(fn):
+	@wraps(fn)
+	def decorated_view(*args, **kwargs):
+		if query_is_admin_user(request.args) or (current_user.is_authenticated() and current_user.admin):
+			return fn(*args, **kwargs)
+		return app.login_manager.unauthorized()
+	return decorated_view
+
+def query_is_music_user(query):
+	username = query.get("username", None)
+	password = query.get("password", None)
+	return username == app.config["MUSIC_USER"] and password == app.config["MUSIC_PASSWORD"]
+
+def query_is_admin_user(query):
+	username = query.get("username", None)
+	password = query.get("password", None)
+	return username == app.config["ADMIN_USER"] and password == app.config["ADMIN_PASSWORD"]
diff --git a/backend/zmusic/picard/__init__.py b/backend/zmusic/picard/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/backend/zmusic/picard/__init__.py
diff --git a/backend/zmusic/picard/file.py b/backend/zmusic/picard/file.py
new file mode 100644
index 0000000..dd3e091
--- /dev/null
+++ b/backend/zmusic/picard/file.py
@@ -0,0 +1,46 @@
+import logging
+import os
+import hashlib
+
+MIMETYPES = {
+		"mp3": ["audio/mpeg", "audio/mp3", "audio/x-mp3", "audio/mpg", "audio/x-mpeg"],
+		"wav": ["audio/wav"],
+		"mpc": ["audio/x-musepack", "audio/x-mpc"],
+		"ogg": ["audio/ogg", "audio/vorbis", "audio/x-vorbis", "application/ogg", "application/x-ogg"],
+		"wma": ["audio/x-ms-wma", "video/x-ms-asf", "audio/x-wma"],
+		"m4a": ["audio/mp4", "audio/x-m4a", "audio/mpeg4", "audio/aac"],
+		"flac": ["audio/flac", "audio/x-flac", "application/x-flac"],
+		"webm": ["audio/webm" ]
+}
+
+class File(dict, object):
+	log = logging.getLogger()
+
+
+	def __init__(self, filename):
+		self["filename"] = filename
+		self["filestat"] = os.stat(filename)
+		self._load(filename)
+
+	def _info(self, metadata, file):
+		self.update(metadata)
+
+		for mimetype in file.mime:
+			for extension, mimeset in MIMETYPES.items():
+				if mimetype in mimeset:
+					self["mimetype"] = mimeset[0]
+					self["extension"] = extension
+					break
+			if self["mimetype"] != None:
+				break
+		if self["mimetype"] == None and len(file.mime) != 0:
+			self["mimetype"] = file.mime[0]
+
+		self["length"] = file.info.length
+
+		hash = hashlib.new("sha1")
+		hash.update(str(metadata) + self["filename"])
+		self["id"] = hash.hexdigest()
+	
+	def __missing__(self, key):
+		return None
diff --git a/backend/zmusic/picard/formats/__init__.py b/backend/zmusic/picard/formats/__init__.py
new file mode 100644
index 0000000..989fbd7
--- /dev/null
+++ b/backend/zmusic/picard/formats/__init__.py
@@ -0,0 +1,186 @@
+# -*- coding: utf-8 -*-
+#
+# Picard, the next-generation MusicBrainz tagger
+# Copyright (C) 2006 Lukáš Lalinský
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+import sys
+
+_formats = []
+_extensions = {}
+
+def register_format(format):
+    _formats.append(format)
+    for ext in format.EXTENSIONS:
+        _extensions[ext[1:]] = format
+
+def supported_formats():
+    """Returns list of supported formats."""
+    formats = []
+    for format in _formats:
+        formats.append((format.EXTENSIONS, format.NAME))
+    return formats
+
+def open(filename):
+    """Open the specified file and return a File instance with the appropriate format handler, or None."""
+    i = filename.rfind(".")
+    if i < 0:
+        return None
+    ext = filename[i+1:].lower()
+    try:
+        format = _extensions[ext]
+    except KeyError:
+        return None
+    return format(filename)
+
+
+from mutagen import _util
+
+def _insert_bytes_no_mmap(fobj, size, offset, BUFFER_SIZE=2**16):
+    """Insert size bytes of empty space starting at offset.
+
+    fobj must be an open file object, open rb+ or
+    equivalent. Mutagen tries to use mmap to resize the file, but
+    falls back to a significantly slower method if mmap fails.
+    """
+    assert 0 < size
+    assert 0 <= offset
+    locked = False
+    fobj.seek(0, 2)
+    filesize = fobj.tell()
+    movesize = filesize - offset
+    fobj.write('\x00' * size)
+    fobj.flush()
+    try:
+        locked = _util.lock(fobj)
+        fobj.truncate(filesize)
+
+        fobj.seek(0, 2)
+        padsize = size
+        # Don't generate an enormous string if we need to pad
+        # the file out several megs.
+        while padsize:
+            addsize = min(BUFFER_SIZE, padsize)
+            fobj.write("\x00" * addsize)
+            padsize -= addsize
+
+        fobj.seek(filesize, 0)
+        while movesize:
+            # At the start of this loop, fobj is pointing at the end
+            # of the data we need to move, which is of movesize length.
+            thismove = min(BUFFER_SIZE, movesize)
+            # Seek back however much we're going to read this frame.
+            fobj.seek(-thismove, 1)
+            nextpos = fobj.tell()
+            # Read it, so we're back at the end.
+            data = fobj.read(thismove)
+            # Seek back to where we need to write it.
+            fobj.seek(-thismove + size, 1)
+            # Write it.
+            fobj.write(data)
+            # And seek back to the end of the unmoved data.
+            fobj.seek(nextpos)
+            movesize -= thismove
+
+        fobj.flush()
+    finally:
+        if locked:
+            _util.unlock(fobj)
+
+def _delete_bytes_no_mmap(fobj, size, offset, BUFFER_SIZE=2**16):
+    """Delete size bytes of empty space starting at offset.
+
+    fobj must be an open file object, open rb+ or
+    equivalent. Mutagen tries to use mmap to resize the file, but
+    falls back to a significantly slower method if mmap fails.
+    """
+    locked = False
+    assert 0 < size
+    assert 0 <= offset
+    fobj.seek(0, 2)
+    filesize = fobj.tell()
+    movesize = filesize - offset - size
+    assert 0 <= movesize
+    try:
+        if movesize > 0:
+            fobj.flush()
+            locked = _util.lock(fobj)
+            fobj.seek(offset + size)
+            buf = fobj.read(BUFFER_SIZE)
+            while buf:
+                fobj.seek(offset)
+                fobj.write(buf)
+                offset += len(buf)
+                fobj.seek(offset + size)
+                buf = fobj.read(BUFFER_SIZE)
+        fobj.truncate(filesize - size)
+        fobj.flush()
+    finally:
+        if locked:
+            _util.unlock(fobj)
+
+if sys.platform == 'win32':
+    _util.insert_bytes = _insert_bytes_no_mmap
+    _util.delete_bytes = _delete_bytes_no_mmap
+
+
+from zmusic.picard.formats.id3 import (
+    MP3File,
+    TrueAudioFile,
+    )
+register_format(MP3File)
+register_format(TrueAudioFile)
+
+from zmusic.picard.formats.apev2 import (
+    MonkeysAudioFile,
+    MusepackFile,
+    OptimFROGFile,
+    WavPackFile,
+    TAKFile,
+    )
+register_format(MusepackFile)
+register_format(WavPackFile)
+register_format(OptimFROGFile)
+register_format(MonkeysAudioFile)
+register_format(TAKFile)
+
+from zmusic.picard.formats.vorbis import (
+    FLACFile,
+    OggFLACFile,
+    OggSpeexFile,
+    OggVorbisFile,
+    OggAudioFile,
+    )
+register_format(FLACFile)
+register_format(OggFLACFile)
+register_format(OggSpeexFile)
+register_format(OggVorbisFile)
+register_format(OggAudioFile)
+
+try:
+    from zmusic.picard.formats.mp4 import MP4File
+    register_format(MP4File)
+except ImportError:
+    pass
+
+try:
+    from zmusic.picard.formats.asf import ASFFile
+    register_format(ASFFile)
+except ImportError:
+    pass
+
+from zmusic.picard.formats.wav import WAVFile
+register_format(WAVFile)
diff --git a/backend/zmusic/picard/formats/apev2.py b/backend/zmusic/picard/formats/apev2.py
new file mode 100644
index 0000000..15c4808
--- /dev/null
+++ b/backend/zmusic/picard/formats/apev2.py
@@ -0,0 +1,206 @@
+# -*- coding: utf-8 -*-
+#
+# Picard, the next-generation MusicBrainz tagger
+# Copyright (C) 2006 Lukáš Lalinský
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+import mutagen.apev2
+import mutagen.monkeysaudio
+import mutagen.musepack
+import mutagen.wavpack
+import mutagen.optimfrog
+import mutagenext.tak
+from zmusic.picard.file import File
+from zmusic.picard.metadata import Metadata
+from zmusic.picard.util import encode_filename, sanitize_date, mimetype
+from os.path import isfile
+
+class APEv2File(File):
+    """Generic APEv2-based file."""
+    _File = None
+
+    __translate = {
+        "Album Artist": "albumartist",
+        "MixArtist": "remixer",
+        "Weblink": "website",
+        "DiscSubtitle": "discsubtitle",
+        "BPM": "bpm",
+        "ISRC": "isrc",
+        "CatalogNumber": "catalognumber",
+        "Barcode": "barcode",
+        "EncodedBy": "encodedby",
+        "Language": "language",
+        "MUSICBRAINZ_ALBUMSTATUS": "releasestatus",
+        "MUSICBRAINZ_ALBUMTYPE": "releasetype",
+    }
+    __rtranslate = dict([(v, k) for k, v in __translate.iteritems()])
+
+    def _load(self, filename):
+        self.log.debug("Loading file %r", filename)
+        file = self._File(encode_filename(filename))
+        metadata = Metadata()
+        if file.tags:
+            for origname, values in file.tags.items():
+                if origname.lower().startswith("cover art") and values.kind == mutagen.apev2.BINARY:
+                    if '\0' in values.value:
+                        descr, data = values.value.split('\0', 1)
+                        mime = mimetype.get_from_data(data, descr, 'image/jpeg')
+                        metadata.add_image(mime, data)
+                # skip EXTERNAL and BINARY values
+                if values.kind != mutagen.apev2.TEXT:
+                    continue
+                for value in values:
+                    name = origname
+                    if name == "Year":
+                        name = "date"
+                        value = sanitize_date(value)
+                    elif name == "Track":
+                        name = "tracknumber"
+                        track = value.split("/")
+                        if len(track) > 1:
+                            metadata["totaltracks"] = track[1]
+                            value = track[0]
+                    elif name == "Disc":
+                        name = "discnumber"
+                        disc = value.split("/")
+                        if len(disc) > 1:
+                            metadata["totaldiscs"] = disc[1]
+                            value = disc[0]
+                    elif name == 'Performer' or name == 'Comment':
+                        name = name.lower() + ':'
+                        if value.endswith(')'):
+                            start = value.rfind(' (')
+                            if start > 0:
+                                name += value[start + 2:-1]
+                                value = value[:start]
+                    elif name in self.__translate:
+                        name = self.__translate[name]
+                    else:
+                        name = name.lower()
+                    metadata.add(name, value)
+        self._info(metadata, file)
+        return metadata
+
+    def _save(self, filename, metadata, settings):
+        """Save metadata to the file."""
+        self.log.debug("Saving file %r", filename)
+        try:
+            tags = mutagen.apev2.APEv2(encode_filename(filename))
+        except mutagen.apev2.APENoHeaderError:
+            tags = mutagen.apev2.APEv2()
+        if settings["clear_existing_tags"]:
+            tags.clear()
+        elif settings['save_images_to_tags'] and metadata.images:
+            for name, value in tags.items():
+                if name.lower().startswith('cover art') and value.kind == mutagen.apev2.BINARY:
+                    del tags[name]
+        temp = {}
+        for name, value in metadata.items():
+            if name.startswith("~"):
+                continue
+            if name.startswith('lyrics:'):
+                name = 'Lyrics'
+            elif name == "date":
+                name = "Year"
+            # tracknumber/totaltracks => Track
+            elif name == 'tracknumber':
+                name = 'Track'
+                if 'totaltracks' in metadata:
+                    value = '%s/%s' % (value, metadata['totaltracks'])
+            # discnumber/totaldiscs => Disc
+            elif name == 'discnumber':
+                name = 'Disc'
+                if 'totaldiscs' in metadata:
+                    value = '%s/%s' % (value, metadata['totaldiscs'])
+            elif name in ('totaltracks', 'totaldiscs'):
+                continue
+            # "performer:Piano=Joe Barr" => "Performer=Joe Barr (Piano)"
+            elif name.startswith('performer:') or name.startswith('comment:'):
+                name, desc = name.split(':', 1)
+                name = name.title()
+                if desc:
+                    value += ' (%s)' % desc
+            elif name in self.__rtranslate:
+                name = self.__rtranslate[name]
+            else:
+                name = name.title()
+            temp.setdefault(name, []).append(value)
+        for name, values in temp.items():
+            tags[str(name)] = values
+        if settings['save_images_to_tags']:
+            for mime, data, _fname in metadata.images:
+                cover_filename = 'Cover Art (Front)'
+                cover_filename += mimetype.get_extension(mime, '.jpg')
+                tags['Cover Art (Front)'] = cover_filename + '\0' + data
+                break # can't save more than one item with the same name
+                      # (mp3tags does this, but it's against the specs)
+        tags.save(encode_filename(filename))
+
+class MusepackFile(APEv2File):
+    """Musepack file."""
+    EXTENSIONS = [".mpc", ".mp+"]
+    NAME = "Musepack"
+    _File = mutagen.musepack.Musepack
+    def _info(self, metadata, file):
+        super(MusepackFile, self)._info(metadata, file)
+        metadata['~format'] = "Musepack, SV%d" % file.info.version
+
+class WavPackFile(APEv2File):
+    """WavPack file."""
+    EXTENSIONS = [".wv"]
+    NAME = "WavPack"
+    _File = mutagen.wavpack.WavPack
+    def _info(self, metadata, file):
+        super(WavPackFile, self)._info(metadata, file)
+        metadata['~format'] = self.NAME
+
+    def _save_and_rename(self, old_filename, metadata, settings):
+        """Includes an additional check for WavPack correction files"""
+        wvc_filename = old_filename.replace(".wv", ".wvc")
+        if isfile(wvc_filename):
+            if settings["rename_files"] or settings["move_files"]:
+                self._rename(wvc_filename, metadata, settings)
+        return File._save_and_rename(self, old_filename, metadata, settings)
+
+class OptimFROGFile(APEv2File):
+    """OptimFROG file."""
+    EXTENSIONS = [".ofr", ".ofs"]
+    NAME = "OptimFROG"
+    _File = mutagen.optimfrog.OptimFROG
+    def _info(self, metadata, file):
+        super(OptimFROGFile, self)._info(metadata, file)
+        if file.filename.lower().endswith(".ofs"):
+            metadata['~format'] = "OptimFROG DualStream Audio"
+        else:
+            metadata['~format'] = "OptimFROG Lossless Audio"
+
+class MonkeysAudioFile(APEv2File):
+    """Monkey's Audio file."""
+    EXTENSIONS = [".ape"]
+    NAME = "Monkey's Audio"
+    _File = mutagen.monkeysaudio.MonkeysAudio
+    def _info(self, metadata, file):
+        super(MonkeysAudioFile, self)._info(metadata, file)
+        metadata['~format'] = self.NAME
+
+class TAKFile(APEv2File):
+    """TAK file."""
+    EXTENSIONS = [".tak"]
+    NAME = "Tom's lossless Audio Kompressor"
+    _File = mutagenext.tak.TAK
+    def _info(self, metadata, file):
+        super(TAKFile, self)._info(metadata, file)
+        metadata['~format'] = self.NAME
diff --git a/backend/zmusic/picard/formats/asf.py b/backend/zmusic/picard/formats/asf.py
new file mode 100644
index 0000000..0be2c2a
--- /dev/null
+++ b/backend/zmusic/picard/formats/asf.py
@@ -0,0 +1,173 @@
+# -*- coding: utf-8 -*-
+#
+# Picard, the next-generation MusicBrainz tagger
+# Copyright (C) 2006-2007 Lukáš Lalinský
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+from zmusic.picard.file import File
+from zmusic.picard.util import encode_filename
+from zmusic.picard.metadata import Metadata
+from mutagen.asf import ASF, ASFByteArrayAttribute
+import struct
+
+def unpack_image(data):
+    """
+    Helper function to unpack image data from a WM/Picture tag.
+
+    The data has the following format:
+    1 byte: Picture type (0-20), see ID3 APIC frame specification at http://www.id3.org/id3v2.4.0-frames
+    4 bytes: Picture data length in LE format
+    MIME type, null terminated UTF-16-LE string
+    Description, null terminated UTF-16-LE string
+    The image data in the given length
+    """
+    (type, size) = struct.unpack_from("<bi", data)
+    pos = 5
+    mime = ""
+    while data[pos:pos+2] != "\x00\x00":
+        mime += data[pos:pos+2]
+        pos += 2
+    pos += 2
+    description = ""
+    while data[pos:pos+2] != "\x00\x00":
+        description += data[pos:pos+2]
+        pos += 2
+    pos += 2
+    image_data = data[pos:pos+size]
+    return (mime.decode("utf-16-le"), image_data, type)
+
+def pack_image(mime, data, type=3, description=""):
+    """
+    Helper function to pack image data for a WM/Picture tag.
+    See unpack_image for a description of the data format.
+    """
+    tag_data = struct.pack("<bi", type, len(data))
+    tag_data += mime.encode("utf-16-le") + "\x00\x00"
+    tag_data += description.encode("utf-16-le") + "\x00\x00"
+    tag_data += data
+    return tag_data
+
+class ASFFile(File):
+    """ASF (WMA) metadata reader/writer"""
+    EXTENSIONS = [".wma"]
+    NAME = "Windows Media Audio"
+
+    __TRANS = {
+        'album': 'WM/AlbumTitle',
+        'title': 'Title',
+        'artist': 'Author',
+        'albumartist': 'WM/AlbumArtist',
+        'date': 'WM/Year',
+        'originaldate': 'WM/OriginalReleaseYear',
+        'composer': 'WM/Composer',
+        # FIXME performer
+        'lyricist': 'WM/Writer',
+        'conductor': 'WM/Conductor',
+        'remixer': 'WM/ModifiedBy',
+        # FIXME engineer
+        'producer': 'WM/Producer',
+        'grouping': 'WM/ContentGroupDescription',
+        'subtitle': 'WM/SubTitle',
+        'discsubtitle': 'WM/SetSubTitle',
+        'tracknumber': 'WM/TrackNumber',
+        'discnumber': 'WM/PartOfSet',
+        # FIXME compilation
+        'comment:': 'Description',
+        'genre': 'WM/Genre',
+        'bpm': 'WM/BeatsPerMinute',
+        'script': 'WM/Script',
+        'language': 'WM/Language',
+        'mood': 'WM/Mood',
+        'isrc': 'WM/ISRC',
+        'copyright': 'Copyright',
+        'lyrics': 'WM/Lyrics',
+        '~rating': 'WM/SharedUserRating',
+        'media': 'WM/Media',
+        'barcode': 'WM/Barcode',
+        'catalognumber': 'WM/CatalogNo',
+        'label': 'WM/Publisher',
+        'encodedby': 'WM/EncodedBy',
+        'albumsort': 'WM/AlbumSortOrder',
+        'albumartistsort': 'WM/AlbumArtistSortOrder',
+        'artistsort': 'WM/ArtistSortOrder',
+        'titlesort': 'WM/TitleSortOrder',
+        'musicbrainz_trackid': 'MusicBrainz/Track Id',
+        'musicbrainz_albumid': 'MusicBrainz/Album Id',
+        'musicbrainz_artistid': 'MusicBrainz/Artist Id',
+        'musicbrainz_albumartistid': 'MusicBrainz/Album Artist Id',
+        'musicbrainz_trmid': 'MusicBrainz/TRM Id',
+        'musicbrainz_discid': 'MusicBrainz/Disc Id',
+        'musicbrainz_workid': 'MusicBrainz/Work Id',
+        'musicbrainz_releasegroupid': 'MusicBrainz/Release Group Id',
+        'musicip_puid': 'MusicIP/PUID',
+        'releasestatus': 'MusicBrainz/Album Status',
+        'releasetype': 'MusicBrainz/Album Type',
+        'releasecountry': 'MusicBrainz/Album Release Country',
+        'acoustid_id': 'Acoustid/Id',
+        'acoustid_fingerprint': 'Acoustid/Fingerprint',
+    }
+    __RTRANS = dict([(b, a) for a, b in __TRANS.items()])
+
+    def _load(self, filename):
+        self.log.debug("Loading file %r", filename)
+        file = ASF(encode_filename(filename))
+        metadata = Metadata()
+        for name, values in file.tags.items():
+            if name == 'WM/Picture':
+                for image in values:
+                    (mime, data, type) = unpack_image(image.value)
+                    if type == 3: # Only cover images
+                        metadata.add_image(mime, data)
+                continue
+            elif name not in self.__RTRANS:
+                continue
+            elif name == 'WM/SharedUserRating':
+                # Rating in WMA ranges from 0 to 99, normalize this to the range 0 to 5
+                values[0] = int(round(int(unicode(values[0])) / 99.0 * (5 - 1)))
+            name = self.__RTRANS[name]
+            values = filter(bool, map(unicode, values))
+            if values:
+                metadata[name] = values
+        self._info(metadata, file)
+        return metadata
+
+    def _save(self, filename, metadata, settings):
+        self.log.debug("Saving file %r", filename)
+        file = ASF(encode_filename(filename))
+
+        if settings['clear_existing_tags']:
+            file.tags.clear()
+        if settings['save_images_to_tags']:
+            cover = []
+            for mime, data, _fname in metadata.images:
+                tag_data = pack_image(mime, data, 3)
+                cover.append(ASFByteArrayAttribute(tag_data))
+            if cover:
+                file.tags['WM/Picture'] = cover
+
+        for name, values in metadata.rawitems():
+            if name.startswith('lyrics:'):
+                name = 'lyrics'
+            elif name == '~rating':
+                values[0] = int(values[0]) * 99 / (settings['rating_steps'] - 1)
+            if name not in self.__TRANS:
+                continue
+            name = self.__TRANS[name]
+            file.tags[name] = map(unicode, values)
+        file.save()
+
+    def supports_tag(self, name):
+        return name in self.__TRANS
diff --git a/backend/zmusic/picard/formats/id3.py b/backend/zmusic/picard/formats/id3.py
new file mode 100644
index 0000000..8e955d5
--- /dev/null
+++ b/backend/zmusic/picard/formats/id3.py
@@ -0,0 +1,368 @@
+# -*- coding: utf-8 -*-
+#
+# Picard, the next-generation MusicBrainz tagger
+# Copyright (C) 2006-2007 Lukáš Lalinský
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+import mutagen.apev2
+import mutagen.mp3
+import mutagen.trueaudio
+from mutagen import id3
+from zmusic.picard.metadata import Metadata
+from zmusic.picard.file import File
+from zmusic.picard.formats.mutagenext import compatid3
+from zmusic.picard.util import encode_filename, sanitize_date
+from urlparse import urlparse
+
+
+# Ugly, but... I need to save the text in ISO-8859-1 even if it contains
+# unsupported characters and this better than encoding, decoding and
+# again encoding.
+def patched_EncodedTextSpec_write(self, frame, value):
+    try:
+        enc, term = self._encodings[frame.encoding]
+    except AttributeError:
+        enc, term = self.encodings[frame.encoding]
+    return value.encode(enc, 'ignore') + term
+id3.EncodedTextSpec.write = patched_EncodedTextSpec_write
+
+
+# One more "monkey patch". The ID3 spec says that multiple text
+# values should be _separated_ by the string terminator, which
+# means that e.g. 'a\x00' are two values, 'a' and ''.
+def patched_MultiSpec_write(self, frame, value):
+    data = self._write_orig(frame, value)
+    spec = self.specs[-1]
+    if isinstance(spec, id3.EncodedTextSpec):
+        try:
+            term = spec._encodings[frame.encoding][1]
+        except AttributeError:
+            term = spec.encodings[frame.encoding][1]
+        if data.endswith(term):
+            data = data[:-len(term)]
+    return data
+id3.MultiSpec._write_orig = id3.MultiSpec.write
+id3.MultiSpec.write = patched_MultiSpec_write
+
+
+id3.TCMP = compatid3.TCMP
+id3.TSO2 = compatid3.TSO2
+
+
+class ID3File(File):
+    """Generic ID3-based file."""
+    _File = None
+    _IsMP3 = False
+
+    __upgrade = {
+        'XSOP': 'TSOP',
+        'TXXX:ALBUMARTISTSORT': 'TSO2',
+    }
+
+    __translate = {
+        'TPE1': 'artist',
+        'TPE2': 'albumartist',
+        'TPE3': 'conductor',
+        'TPE4': 'remixer',
+        'TCOM': 'composer',
+        'TCON': 'genre',
+        'TALB': 'album',
+        'TIT1': 'grouping',
+        'TIT2': 'title',
+        'TIT3': 'subtitle',
+        'TSST': 'discsubtitle',
+        'TEXT': 'lyricist',
+        'TCMP': 'compilation',
+        'TDRC': 'date',
+        'TDOR': 'originaldate',
+        'COMM': 'comment',
+        'TMOO': 'mood',
+        'TMED': 'media',
+        'TBPM': 'bpm',
+        'WOAR': 'website',
+        'WCOP': 'license',
+        'TSRC': 'isrc',
+        'TENC': 'encodedby',
+        'TCOP': 'copyright',
+        'TSOA': 'albumsort',
+        'TSO2': 'albumartistsort',
+        'TSOP': 'artistsort',
+        'TSOT': 'titlesort',
+        'TPUB': 'label',
+        'TLAN': 'language',
+    }
+    __rtranslate = dict([(v, k) for k, v in __translate.iteritems()])
+
+    __translate_freetext = {
+        'MusicBrainz Artist Id': 'musicbrainz_artistid',
+        'MusicBrainz Album Id': 'musicbrainz_albumid',
+        'MusicBrainz Album Artist Id': 'musicbrainz_albumartistid',
+        'MusicBrainz Album Type': 'releasetype',
+        'MusicBrainz Album Status': 'releasestatus',
+        'MusicBrainz TRM Id': 'musicbrainz_trmid',
+        'MusicBrainz Disc Id': 'musicbrainz_discid',
+        'MusicBrainz Work Id': 'musicbrainz_workid',
+        'MusicBrainz Release Group Id': 'musicbrainz_releasegroupid',
+        'MusicBrainz Album Release Country': 'releasecountry',
+        'MusicIP PUID': 'musicip_puid',
+        'Acoustid Fingerprint': 'acoustid_fingerprint',
+        'Acoustid Id': 'acoustid_id',
+        'SCRIPT': 'script',
+        'LICENSE': 'license',
+        'CATALOGNUMBER': 'catalognumber',
+        'BARCODE': 'barcode',
+        'ASIN': 'asin',
+        'MusicMagic Fingerprint': 'musicip_fingerprint',
+    }
+    __rtranslate_freetext = dict([(v, k) for k, v in __translate_freetext.iteritems()])
+
+    __tipl_roles = {
+        'engineer': 'engineer',
+        'arranger': 'arranger',
+        'producer': 'producer',
+        'DJ-mix': 'djmixer',
+        'mix': 'mixer',
+    }
+    __rtipl_roles = dict([(v, k) for k, v in __tipl_roles.iteritems()])
+
+    __other_supported_tags = ("discnumber", "tracknumber",
+                              "totaldiscs", "totaltracks")
+
+    def _load(self, filename):
+        self.log.debug("Loading file %r", filename)
+        file = self._File(encode_filename(filename), ID3=compatid3.CompatID3)
+        tags = file.tags or {}
+        # upgrade custom 2.3 frames to 2.4
+        for old, new in self.__upgrade.items():
+            if old in tags and new not in tags:
+                f = tags.pop(old)
+                tags.add(getattr(id3, new)(encoding=f.encoding, text=f.text))
+        metadata = Metadata()
+        for frame in tags.values():
+            frameid = frame.FrameID
+            if frameid in self.__translate:
+                name = self.__translate[frameid]
+                if frameid.startswith('T'):
+                    for text in frame.text:
+                        if text:
+                            metadata.add(name, unicode(text))
+                elif frameid == 'COMM':
+                    for text in frame.text:
+                        if text:
+                            metadata.add('%s:%s' % (name, frame.desc), unicode(text))
+                else:
+                    metadata.add(name, unicode(frame))
+            elif frameid == "TMCL":
+                for role, name in frame.people:
+                    if role or name:
+                        metadata.add('performer:%s' % role, name)
+            elif frameid == "TIPL":
+                for role, name in frame.people:
+                    if role in self.__tipl_roles and name:
+                        metadata.add(self.__tipl_roles[role], name)
+            elif frameid == 'TXXX':
+                if frame.desc in self.__translate_freetext:
+                    name = self.__translate_freetext[frame.desc]
+                else:
+                    name = str(frame.desc.lower())
+                for text in frame.text:
+                    metadata.add(name, unicode(text))
+            elif frameid == 'USLT':
+                name = 'lyrics'
+                if frame.desc:
+                    name += ':%s' % frame.desc
+                metadata.add(name, unicode(frame.text))
+            elif frameid == 'UFID' and frame.owner == 'http://musicbrainz.org':
+                metadata['musicbrainz_trackid'] = unicode(frame.data)
+            elif frameid == 'TRCK':
+                value = frame.text[0].split('/')
+                if len(value) > 1:
+                    metadata['tracknumber'], metadata['totaltracks'] = value[:2]
+                else:
+                    metadata['tracknumber'] = value[0]
+            elif frameid == 'TPOS':
+                value = frame.text[0].split('/')
+                if len(value) > 1:
+                    metadata['discnumber'], metadata['totaldiscs'] = value[:2]
+                else:
+                    metadata['discnumber'] = value[0]
+            elif frameid == 'APIC':
+                metadata.add_image(frame.mime, frame.data)
+            elif frameid == 'POPM':
+                # Rating in ID3 ranges from 0 to 255, normalize this to the range 0 to 5
+                if False:
+                    rating = unicode(int(round(frame.rating / 255.0 * (5 - 1))))
+                    metadata.add('~rating', rating)
+
+        if 'date' in metadata:
+            metadata['date'] = sanitize_date(metadata.getall('date')[0])
+
+        self._info(metadata, file)
+        return metadata
+
+    def _save(self, filename, metadata, settings):
+        """Save metadata to the file."""
+        self.log.debug("Saving file %r", filename)
+        try:
+            tags = compatid3.CompatID3(encode_filename(filename))
+        except mutagen.id3.ID3NoHeaderError:
+            tags = compatid3.CompatID3()
+
+        if settings['clear_existing_tags']:
+            tags.clear()
+        if settings['save_images_to_tags'] and metadata.images:
+            tags.delall('APIC')
+
+        if settings['write_id3v1']:
+            v1 = 2
+        else:
+            v1 = 0
+        encoding = {'utf-8': 3, 'utf-16': 1}.get(settings['id3v2_encoding'], 0)
+
+        if 'tracknumber' in metadata:
+            if 'totaltracks' in metadata:
+                text = '%s/%s' % (metadata['tracknumber'], metadata['totaltracks'])
+            else:
+                text = metadata['tracknumber']
+            tags.add(id3.TRCK(encoding=0, text=text))
+
+        if 'discnumber' in metadata:
+            if 'totaldiscs' in metadata:
+                text = '%s/%s' % (metadata['discnumber'], metadata['totaldiscs'])
+            else:
+                text = metadata['discnumber']
+            tags.add(id3.TPOS(encoding=0, text=text))
+
+        if settings['save_images_to_tags']:
+            for mime, data, _fname in metadata.images:
+                tags.add(id3.APIC(encoding=0, mime=mime, type=3, desc='', data=data))
+
+        tmcl = mutagen.id3.TMCL(encoding=encoding, people=[])
+        tipl = mutagen.id3.TIPL(encoding=encoding, people=[])
+
+        tags.delall('TCMP')
+        for name, values in metadata.rawitems():
+            if name.startswith('performer:'):
+                role = name.split(':', 1)[1]
+                for value in values:
+                    tmcl.people.append([role, value])
+            elif name.startswith('comment:'):
+                desc = name.split(':', 1)[1]
+                if desc.lower()[:4]=="itun":
+                    tags.delall('COMM:' + desc)
+                    tags.add(id3.COMM(encoding=0, desc=desc, lang='eng', text=[v+u'\x00' for v in values]))
+                else:
+                    tags.add(id3.COMM(encoding=encoding, desc=desc, lang='eng', text=values))
+            elif name.startswith('lyrics:') or name == 'lyrics':
+                if ':' in name:
+                    desc = name.split(':', 1)[1]
+                else:
+                    desc = ''
+                for value in values:
+                    tags.add(id3.USLT(encoding=encoding, desc=desc, text=value))
+            elif name in self.__rtipl_roles:
+                for value in values:
+                    tipl.people.append([self.__rtipl_roles[name], value])
+            elif name == 'musicbrainz_trackid':
+                tags.add(id3.UFID(owner='http://musicbrainz.org', data=str(values[0])))
+            elif name == '~rating':
+                # Search for an existing POPM frame to get the current playcount
+                for frame in tags.values():
+                    if frame.FrameID == 'POPM' and frame.email == settings['rating_user_email']:
+                        count = getattr(frame, 'count', 0)
+                        break
+                else:
+                    count = 0
+
+                # Convert rating to range between 0 and 255
+                rating = int(round(float(values[0]) * 255 / (settings['rating_steps'] - 1)))
+                tags.add(id3.POPM(email=settings['rating_user_email'], rating=rating, count=count))
+            elif name in self.__rtranslate:
+                frameid = self.__rtranslate[name]
+                if frameid.startswith('W'):
+                    valid_urls = all([all(urlparse(v)[:2]) for v in values])
+                    if frameid == 'WCOP':
+                        # Only add WCOP if there is only one license URL, otherwise use TXXX:LICENSE
+                        if len(values) > 1 or not valid_urls:
+                            tags.add(id3.TXXX(encoding=encoding, desc=self.__rtranslate_freetext[name], text=values))
+                        else:
+                            tags.add(id3.WCOP(url=values[0]))
+                    elif frameid == 'WOAR' and valid_urls:
+                        for url in values:
+                            tags.add(id3.WOAR(url=url))
+                elif frameid.startswith('T'):
+                    tags.add(getattr(id3, frameid)(encoding=encoding, text=values))
+                    if frameid == 'TSOA':
+                        tags.delall('XSOA')
+                    elif frameid == 'TSOP':
+                        tags.delall('XSOP')
+                    elif frameid == 'TSO2':
+                        tags.delall('TXXX:ALBUMARTISTSORT')
+            elif name in self.__rtranslate_freetext:
+                tags.add(id3.TXXX(encoding=encoding, desc=self.__rtranslate_freetext[name], text=values))
+            elif name.startswith('~id3:'):
+                name = name[5:]
+                if name.startswith('TXXX:'):
+                    tags.add(id3.TXXX(encoding=encoding, desc=name[5:], text=values))
+                else:
+                    frameclass = getattr(id3, name[:4], None)
+                    if frameclass:
+                        tags.add(frameclass(encoding=encoding, text=values))
+            # don't save private / already stored tags
+            elif not name.startswith("~") and not name in self.__other_supported_tags:
+                tags.add(id3.TXXX(encoding=encoding, desc=name, text=values))
+
+        if tmcl.people:
+            tags.add(tmcl)
+        if tipl.people:
+            tags.add(tipl)
+
+        if settings['write_id3v23']:
+            tags.update_to_v23()
+            tags.save(encode_filename(filename), v2=3, v1=v1)
+        else:
+            tags.update_to_v24()
+            tags.save(encode_filename(filename), v2=4, v1=v1)
+
+        if self._IsMP3 and settings["remove_ape_from_mp3"]:
+            try: mutagen.apev2.delete(encode_filename(filename))
+            except: pass
+
+    def supports_tag(self, name):
+        return name in self.__rtranslate or name in self.__rtranslate_freetext\
+            or name.startswith('performer:')\
+            or name.startswith('lyrics:')\
+            or name in self.__other_supported_tags
+
+
+class MP3File(ID3File):
+    """MP3 file."""
+    EXTENSIONS = [".mp3", ".mp2"]
+    NAME = "MPEG-1 Audio"
+    _File = mutagen.mp3.MP3
+    _IsMP3 = True
+    def _info(self, metadata, file):
+        super(MP3File, self)._info(metadata, file)
+        metadata['~format'] = 'MPEG-1 Layer %d' % file.info.layer
+
+class TrueAudioFile(ID3File):
+    """TTA file."""
+    EXTENSIONS = [".tta"]
+    NAME = "The True Audio"
+    _File = mutagen.trueaudio.TrueAudio
+    def _info(self, metadata, file):
+        super(TrueAudioFile, self)._info(metadata, file)
+        metadata['~format'] = self.NAME
diff --git a/backend/zmusic/picard/formats/mp4.py b/backend/zmusic/picard/formats/mp4.py
new file mode 100644
index 0000000..2d1763f
--- /dev/null
+++ b/backend/zmusic/picard/formats/mp4.py
@@ -0,0 +1,203 @@
+# -*- coding: utf-8 -*-
+#
+# Picard, the next-generation MusicBrainz tagger
+# Copyright (C) 2006 Lukáš Lalinský
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+from mutagen.mp4 import MP4, MP4Cover
+from zmusic.picard.file import File
+from zmusic.picard.metadata import Metadata
+from zmusic.picard.util import encode_filename
+
+class MP4File(File):
+    EXTENSIONS = [".m4a", ".m4b", ".m4p", ".mp4"]
+    NAME = "MPEG-4 Audio"
+
+    __text_tags = {
+        "\xa9ART": "artist",
+        "\xa9nam": "title",
+        "\xa9alb": "album",
+        "\xa9wrt": "composer",
+        "aART": "albumartist",
+        "\xa9grp": "grouping",
+        "\xa9day": "date",
+        "\xa9gen": "genre",
+        "\xa9lyr": "lyrics",
+        "\xa9cmt": "comment:",
+        "\xa9too": "encodedby",
+        "cprt": "copyright",
+        "soal": "albumsort",
+        "soaa": "albumartistsort",
+        "soar": "artistsort",
+        "sonm": "titlesort",
+        "soco": "composersort",
+        "sosn": "showsort",
+        "tvsh": "show",
+        "purl": "podcasturl",
+    }
+    __r_text_tags = dict([(v, k) for k, v in __text_tags.iteritems()])
+
+    __bool_tags = {
+        "pcst": "podcast",
+        "cpil": "compilation",
+        "pgap": "gapless",
+    }
+    __r_bool_tags = dict([(v, k) for k, v in __bool_tags.iteritems()])
+
+    __int_tags = {
+        "tmpo": "bpm",
+    }
+    __r_int_tags = dict([(v, k) for k, v in __int_tags.iteritems()])
+
+    __freeform_tags = {
+        "----:com.apple.iTunes:MusicBrainz Track Id": "musicbrainz_trackid",
+        "----:com.apple.iTunes:MusicBrainz Artist Id": "musicbrainz_artistid",
+        "----:com.apple.iTunes:MusicBrainz Album Id": "musicbrainz_albumid",
+        "----:com.apple.iTunes:MusicBrainz Album Artist Id": "musicbrainz_albumartistid",
+        "----:com.apple.iTunes:MusicIP PUID": "musicip_puid",
+        "----:com.apple.iTunes:MusicBrainz Album Status": "releasestatus",
+        "----:com.apple.iTunes:MusicBrainz Album Release Country": "releasecountry",
+        "----:com.apple.iTunes:MusicBrainz Album Type": "releasetype",
+        "----:com.apple.iTunes:MusicBrainz Disc Id": "musicbrainz_discid",
+        "----:com.apple.iTunes:MusicBrainz TRM Id": "musicbrainz_trmid",
+        "----:com.apple.iTunes:MusicBrainz Work Id": "musicbrainz_workid",
+        "----:com.apple.iTunes:MusicBrainz Release Group Id": "musicbrainz_releasegroupid",
+        "----:com.apple.iTunes:Acoustid Fingerprint": "acoustid_fingerprint",
+        "----:com.apple.iTunes:Acoustid Id": "acoustid_id",
+        "----:com.apple.iTunes:ASIN": "asin",
+        "----:com.apple.iTunes:BARCODE": "barcode",
+        "----:com.apple.iTunes:PRODUCER": "producer",
+        "----:com.apple.iTunes:LYRICIST": "lyricist",
+        "----:com.apple.iTunes:CONDUCTOR": "conductor",
+        "----:com.apple.iTunes:ENGINEER": "engineer",
+        "----:com.apple.iTunes:MIXER": "mixer",
+        "----:com.apple.iTunes:DJMIXER": "djmixer",
+        "----:com.apple.iTunes:REMIXER": "remixer",
+        "----:com.apple.iTunes:ISRC": "isrc",
+        "----:com.apple.iTunes:MEDIA": "media",
+        "----:com.apple.iTunes:LABEL": "label",
+        "----:com.apple.iTunes:LICENSE": "license",
+        "----:com.apple.iTunes:CATALOGNUMBER": "catalognumber",
+        "----:com.apple.iTunes:SUBTITLE": "subtitle",
+        "----:com.apple.iTunes:DISCSUBTITLE": "discsubtitle",
+        "----:com.apple.iTunes:MOOD": "mood",
+        "----:com.apple.iTunes:SCRIPT": "script",
+        "----:com.apple.iTunes:LANGUAGE": "language",
+    }
+    __r_freeform_tags = dict([(v, k) for k, v in __freeform_tags.iteritems()])
+
+    __other_supported_tags = ("discnumber", "tracknumber",
+                              "totaldiscs", "totaltracks")
+
+    def _load(self, filename):
+        self.log.debug("Loading file %r", filename)
+        file = MP4(encode_filename(filename))
+        if file.tags is None:
+            file.add_tags()
+
+        metadata = Metadata()
+        for name, values in file.tags.items():
+            if name in self.__text_tags:
+                for value in values:
+                    metadata.add(self.__text_tags[name], value)
+            elif name in self.__bool_tags:
+                metadata.add(self.__bool_tags[name], values and '1' or '0')
+            elif name in self.__int_tags:
+                for value in values:
+                    metadata.add(self.__int_tags[name], unicode(value))
+            elif name in self.__freeform_tags:
+                for value in values:
+                    value = value.strip("\x00").decode("utf-8", "replace")
+                    metadata.add(self.__freeform_tags[name], value)
+            elif name == "----:com.apple.iTunes:fingerprint":
+                for value in values:
+                    value = value.strip("\x00").decode("utf-8", "replace")
+                    if value.startswith("MusicMagic Fingerprint"):
+                        metadata.add("musicip_fingerprint", value[22:])
+            elif name == "trkn":
+                metadata["tracknumber"] = str(values[0][0])
+                metadata["totaltracks"] = str(values[0][1])
+            elif name == "disk":
+                metadata["discnumber"] = str(values[0][0])
+                metadata["totaldiscs"] = str(values[0][1])
+            elif name == "covr":
+                for value in values:
+                    if value.format == value.FORMAT_JPEG:
+                        metadata.add_image("image/jpeg", value)
+                    elif value.format == value.FORMAT_PNG:
+                        metadata.add_image("image/png", value)
+
+        self._info(metadata, file)
+        return metadata
+
+    def _save(self, filename, metadata, settings):
+        self.log.debug("Saving file %r", filename)
+        file = MP4(encode_filename(self.filename))
+        if file.tags is None:
+            file.add_tags()
+
+        if settings["clear_existing_tags"]:
+            file.tags.clear()
+
+        for name, values in metadata.rawitems():
+            if name.startswith('lyrics:'):
+                name = 'lyrics'
+            if name in self.__r_text_tags:
+                file.tags[self.__r_text_tags[name]] = values
+            elif name in self.__r_bool_tags:
+                file.tags[self.__r_bool_tags[name]] = (values[0] == '1')
+            elif name in self.__r_int_tags:
+                try:
+                    file.tags[self.__r_int_tags[name]] = [int(value) for value in values]
+                except ValueError:
+                    pass
+            elif name in self.__r_freeform_tags:
+                values = [v.encode("utf-8") for v in values]
+                file.tags[self.__r_freeform_tags[name]] = values
+            elif name == "musicip_fingerprint":
+                file.tags["----:com.apple.iTunes:fingerprint"] = ["MusicMagic Fingerprint%s" % str(v) for v in values]
+
+        if "tracknumber" in metadata:
+            if "totaltracks" in metadata:
+                file.tags["trkn"] = [(int(metadata["tracknumber"]),
+                                      int(metadata["totaltracks"]))]
+            else:
+                file.tags["trkn"] = [(int(metadata["tracknumber"]), 0)]
+
+        if "discnumber" in metadata:
+            if "totaldiscs" in metadata:
+                file.tags["disk"] = [(int(metadata["discnumber"]),
+                                      int(metadata["totaldiscs"]))]
+            else:
+                file.tags["disk"] = [(int(metadata["discnumber"]), 0)]
+
+        if settings['save_images_to_tags']:
+            covr = []
+            for mime, data, _fname in metadata.images:
+                if mime == "image/jpeg":
+                    covr.append(MP4Cover(data, MP4Cover.FORMAT_JPEG))
+                elif mime == "image/png":
+                    covr.append(MP4Cover(data, MP4Cover.FORMAT_PNG))
+            if covr:
+                file.tags["covr"] = covr
+
+        file.save()
+
+    def supports_tag(self, name):
+        return name in self.__r_text_tags or name in self.__r_bool_tags\
+            or name in self.__r_freeform_tags\
+            or name in self.__other_supported_tags\
+            or name.startswith('lyrics:')
diff --git a/backend/zmusic/picard/formats/mutagenext/__init__.py b/backend/zmusic/picard/formats/mutagenext/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/backend/zmusic/picard/formats/mutagenext/__init__.py
diff --git a/backend/zmusic/picard/formats/mutagenext/compatid3.py b/backend/zmusic/picard/formats/mutagenext/compatid3.py
new file mode 100644
index 0000000..8ca98a6
--- /dev/null
+++ b/backend/zmusic/picard/formats/mutagenext/compatid3.py
@@ -0,0 +1,237 @@
+# -*- coding: utf-8 -*-
+#
+# Picard, the next-generation MusicBrainz tagger
+# Copyright (C) 2006 Lukáš Lalinský
+# Copyright (C) 2005 Michael Urman
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+import struct
+from struct import pack, unpack
+import mutagen
+from mutagen._util import insert_bytes
+from mutagen.id3 import ID3, Frame, Frames, Frames_2_2, TextFrame, TORY, \
+                        TYER, TIME, APIC, IPLS, TDAT, BitPaddedInt, MakeID3v1
+
+class TCMP(TextFrame):
+    pass
+
+class TSO2(TextFrame):
+    pass
+
+class XDOR(TextFrame):
+    pass
+
+class XSOP(TextFrame):
+    pass
+
+class CompatID3(ID3):
+    """
+    Additional features over mutagen.id3.ID3:
+     * ID3v2.3 writing
+     * iTunes' TCMP frame
+    """
+
+    PEDANTIC = False
+
+    def __init__(self, *args, **kwargs):
+        self.unknown_frames = []
+        if args:
+            known_frames = dict(Frames)
+            known_frames.update(dict(Frames_2_2))
+            known_frames["TCMP"] = TCMP
+            known_frames["TSO2"] = TSO2
+            known_frames["XDOR"] = XDOR
+            known_frames["XSOP"] = XSOP
+            kwargs["known_frames"] = known_frames
+        super(CompatID3, self).__init__(*args, **kwargs) 
+
+    def save(self, filename=None, v1=1, v2=4):
+        """Save changes to a file.
+
+        If no filename is given, the one most recently loaded is used.
+
+        Keyword arguments:
+        v1 -- if 0, ID3v1 tags will be removed
+              if 1, ID3v1 tags will be updated but not added
+              if 2, ID3v1 tags will be created and/or updated
+        v2 -- version of ID3v2 tags (3 or 4). By default Mutagen saves ID3v2.4
+              tags. If you want to save ID3v2.3 tags, you must call method
+              update_to_v23 before saving the file.
+
+        The lack of a way to update only an ID3v1 tag is intentional.
+        """
+
+        # Sort frames by 'importance'
+        order = ["TIT2", "TPE1", "TRCK", "TALB", "TPOS", "TDRC", "TCON"]
+        order = dict(zip(order, range(len(order))))
+        last = len(order)
+        frames = self.items()
+        frames.sort(lambda a, b: cmp(order.get(a[0][:4], last),
+                                     order.get(b[0][:4], last)))
+
+        framedata = [self.__save_frame(frame, v2) for (key, frame) in frames]
+        framedata.extend([data for data in self.unknown_frames
+                if len(data) > 10])
+        if not framedata:
+            try:
+                self.delete(filename)
+            except EnvironmentError, err:
+                from errno import ENOENT
+                if err.errno != ENOENT: raise
+            return
+
+        framedata = ''.join(framedata)
+        framesize = len(framedata)
+
+        if filename is None: filename = self.filename
+        try: f = open(filename, 'rb+')
+        except IOError, err:
+            from errno import ENOENT
+            if err.errno != ENOENT: raise
+            f = open(filename, 'ab') # create, then reopen
+            f = open(filename, 'rb+')
+        try:
+            idata = f.read(10)
+            try: id3, vmaj, vrev, flags, insize = unpack('>3sBBB4s', idata)
+            except struct.error: id3, insize = '', 0
+            insize = BitPaddedInt(insize)
+            if id3 != 'ID3': insize = -10
+
+            if insize >= framesize: outsize = insize
+            else: outsize = (framesize + 1023) & ~0x3FF
+            framedata += '\x00' * (outsize - framesize)
+
+            framesize = BitPaddedInt.to_str(outsize, width=4)
+            flags = 0
+            header = pack('>3sBBB4s', 'ID3', v2, 0, flags, framesize)
+            data = header + framedata
+
+            if (insize < outsize):
+                insert_bytes(f, outsize-insize, insize+10)
+            f.seek(0)
+            f.write(data)
+
+            try:
+                f.seek(-128, 2)
+            except IOError, err:
+                from errno import EINVAL
+                if err.errno != EINVAL: raise
+                f.seek(0, 2) # ensure read won't get "TAG"
+
+            if f.read(3) == "TAG":
+                f.seek(-128, 2)
+                if v1 > 0: f.write(MakeID3v1(self))
+                else: f.truncate()
+            elif v1 == 2:
+                f.seek(0, 2)
+                f.write(MakeID3v1(self))
+
+        finally:
+            f.close()
+
+    def __save_frame(self, frame, v2):
+        flags = 0
+        if self.PEDANTIC and isinstance(frame, TextFrame):
+            if len(str(frame)) == 0: return ''
+        framedata = frame._writeData()
+        if v2 == 3: bits=8
+        else: bits=7
+        datasize = BitPaddedInt.to_str(len(framedata), width=4, bits=bits)
+        header = pack('>4s4sH', type(frame).__name__, datasize, flags)
+        return header + framedata
+
+    def update_to_v23(self):
+        """Convert older (and newer) tags into an ID3v2.3 tag.
+
+        This updates incompatible ID3v2 frames to ID3v2.3 ones. If you
+        intend to save tags as ID3v2.3, you must call this function
+        at some point.
+        """
+
+        if self.version < (2,3,0): del self.unknown_frames[:]
+
+        # TMCL, TIPL -> TIPL
+        if "TIPL" in self or "TMCL" in self:
+            people = []
+            if "TIPL" in self:
+                f = self.pop("TIPL")
+                people.extend(f.people)
+            if "TMCL" in self:
+                f = self.pop("TMCL")
+                people.extend(f.people)
+            if "IPLS" not in self:
+                self.add(IPLS(encoding=f.encoding, people=people))
+
+        # TODO:
+        #  * EQU2 -> EQUA
+        #  * RVA2 -> RVAD 
+
+        #  TDOR -> TORY
+        if "TDOR" in self:
+            f = self.pop("TDOR")
+            if f.text:
+                d = f.text[0]
+                if d.year and "TORY" not in self:
+                    self.add(TORY(encoding=f.encoding, text="%04d" % d.year))
+
+        # TDRC -> TYER, TDAT, TIME
+        if "TDRC" in self:
+            f = self.pop("TDRC")
+            if f.text:
+                d = f.text[0]
+                if d.year and "TYER" not in self:
+                    self.add(TYER(encoding=f.encoding, text="%04d" % d.year))
+                if d.month and d.day and "TDAT" not in self:
+                    self.add(TDAT(encoding=f.encoding, text="%02d%02d" % (d.day, d.month)))
+                if d.hour and d.minute and "TIME" not in self:
+                    self.add(TIME(encoding=f.encoding, text="%02d%02d" % (d.hour, d.minute)))
+
+        if "TCON" in self:
+            self["TCON"].genres = self["TCON"].genres
+
+        if self.version < (2, 3):
+            # ID3v2.2 PIC frames are slightly different.
+            pics = self.getall("APIC")
+            mimes = { "PNG": "image/png", "JPG": "image/jpeg" }
+            self.delall("APIC")
+            for pic in pics:
+                newpic = APIC(
+                    encoding=pic.encoding, mime=mimes.get(pic.mime, pic.mime),
+                    type=pic.type, desc=pic.desc, data=pic.data)
+                self.add(newpic)
+
+            # ID3v2.2 LNK frames are just way too different to upgrade.
+            self.delall("LINK")
+
+        # leave TSOP, TSOA and TSOT even though they are officially defined
+        # only in ID3v2.4, because most applications use them also in ID3v2.3
+
+        # New frames added in v2.4.
+        for key in ["ASPI", "EQU2", "RVA2", "SEEK", "SIGN", "TDRL", "TDTG",
+            "TMOO", "TPRO"]:
+            if key in self: del(self[key])
+
+        for frame in self.values():
+            # ID3v2.3 doesn't support UTF-8 (and WMP can't read UTF-16 BE)
+            if hasattr(frame, "encoding"):
+                if frame.encoding > 1:
+                    frame.encoding = 1
+            # ID3v2.3 doesn't support multiple values
+            if isinstance(frame, mutagen.id3.TextFrame):
+                try:
+                    frame.text = ["/".join(frame.text)]
+                except TypeError:
+                    frame.text = frame.text[:1]
diff --git a/backend/zmusic/picard/formats/mutagenext/tak.py b/backend/zmusic/picard/formats/mutagenext/tak.py
new file mode 100644
index 0000000..b4568cb
--- /dev/null
+++ b/backend/zmusic/picard/formats/mutagenext/tak.py
@@ -0,0 +1,48 @@
+# Tom's lossless Audio Kompressor (TAK) reader/tagger
+#
+# Copyright 2008 Lukas Lalinsky <lalinsky@gmail.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# $$
+
+"""Tom's lossless Audio Kompressor streams with APEv2 tags.
+
+TAK is a lossless audio compressor developed by Thomas Becker.
+
+For more information, see http://wiki.hydrogenaudio.org/index.php?title=TAK
+and http://en.wikipedia.org/wiki/TAK_(audio_codec)
+"""
+
+__all__ = ["TAK", "Open", "delete"]
+
+from mutagen.apev2 import APEv2File, error, delete
+
+class TAKHeaderError(error): pass
+
+class TAKInfo(object):
+    """TAK stream information.
+
+    Attributes:
+      (none at the moment)
+    """
+
+    def __init__(self, fileobj):
+        header = fileobj.read(4)
+        if len(header) != 4 or not header.startswith("tBaK"):
+            raise TAKHeaderError("not a TAK file")
+
+    def pprint(self):
+        return "Tom's lossless Audio Kompressor"
+
+class TAK(APEv2File):
+    _Info = TAKInfo
+    _mimes = ["audio/x-tak"]
+
+    def score(filename, fileobj, header):
+        return header.startswith("tBaK") + filename.lower().endswith(".tak")
+    score = staticmethod(score)
+
+Open = TAK
diff --git a/backend/zmusic/picard/formats/vorbis.py b/backend/zmusic/picard/formats/vorbis.py
new file mode 100644
index 0000000..f52bf06
--- /dev/null
+++ b/backend/zmusic/picard/formats/vorbis.py
@@ -0,0 +1,225 @@
+# -*- coding: utf-8 -*-
+#
+# Picard, the next-generation MusicBrainz tagger
+# Copyright (C) 2006 Lukáš Lalinský
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+import base64
+import mutagen.flac
+import mutagen.ogg
+import mutagen.oggflac
+import mutagen.oggspeex
+import mutagen.oggtheora
+import mutagen.oggvorbis
+from zmusic.picard.file import File
+from zmusic.picard.metadata import Metadata
+from zmusic.picard.util import encode_filename, sanitize_date
+
+class VCommentFile(File):
+    """Generic VComment-based file."""
+    _File = None
+
+    def _load(self, filename):
+        self.log.debug("Loading file %r", filename)
+        file = self._File(encode_filename(filename))
+        file.tags = file.tags or {}
+        metadata = Metadata()
+        for origname, values in file.tags.items():
+            for value in values:
+                name = origname
+                if name == "date" or name == "originaldate":
+                    # YYYY-00-00 => YYYY
+                    value = sanitize_date(value)
+                elif name == 'performer' or name == 'comment':
+                    # transform "performer=Joe Barr (Piano)" to "performer:Piano=Joe Barr"
+                    name += ':'
+                    if value.endswith(')'):
+                        start = len(value) - 2
+                        count = 1
+                        while count > 0 and start > 0:
+                            if value[start] == ')':
+                                count += 1
+                            elif value[start] == '(':
+                                count -= 1
+                            start -= 1
+                        if start > 0:
+                            name += value[start + 2:-1]
+                            value = value[:start]
+                elif name.startswith('rating'):
+                    try: name, email = name.split(':', 1)
+                    except ValueError: email = ''
+		    continue
+                    if email != self.config.setting['rating_user_email']:
+                        continue
+                    name = '~rating'
+                    value = unicode(int(round((float(value) * (5 - 1)))))
+                elif name == "fingerprint" and value.startswith("MusicMagic Fingerprint"):
+                    name = "musicip_fingerprint"
+                    value = value[22:]
+                elif name == "tracktotal":
+                    if "totaltracks" in file.tags:
+                        continue
+                    name = "totaltracks"
+                elif name == "disctotal":
+                    if "totaldiscs" in file.tags:
+                        continue
+                    name = "totaldiscs"
+                elif name == "metadata_block_picture":
+                    image = mutagen.flac.Picture(base64.standard_b64decode(value))
+                    metadata.add_image(image.mime, image.data)
+                    continue
+                metadata.add(name, value)
+        if self._File == mutagen.flac.FLAC:
+            for image in file.pictures:
+                metadata.add_image(image.mime, image.data)
+        # Read the unofficial COVERART tags, for backward compatibillity only
+        if not "metadata_block_picture" in file.tags:
+            try:
+                for index, data in enumerate(file["COVERART"]):
+                    metadata.add_image(file["COVERARTMIME"][index], base64.standard_b64decode(data))
+            except KeyError:
+                pass
+        self._info(metadata, file)
+        return metadata
+
+    def _save(self, filename, metadata, settings):
+        """Save metadata to the file."""
+        self.log.debug("Saving file %r", filename)
+        file = self._File(encode_filename(filename))
+        if file.tags is None:
+            file.add_tags()
+        if settings["clear_existing_tags"]:
+            file.tags.clear()
+        if self._File == mutagen.flac.FLAC and (
+            settings["clear_existing_tags"] or
+            (settings['save_images_to_tags'] and metadata.images)):
+            file.clear_pictures()
+        tags = {}
+        for name, value in metadata.items():
+            if name == '~rating':
+                # Save rating according to http://code.google.com/p/quodlibet/wiki/Specs_VorbisComments
+                if settings['rating_user_email']:
+                    name = 'rating:%s' % settings['rating_user_email']
+                else:
+                    name = 'rating'
+                value = unicode(float(value) / (settings['rating_steps'] - 1))
+            # don't save private tags
+            elif name.startswith("~"):
+                continue
+            if name.startswith('lyrics:'):
+                name = 'lyrics'
+            elif name == "date" or name == "originaldate":
+                # YYYY-00-00 => YYYY
+                value = sanitize_date(value)
+            elif name.startswith('performer:') or name.startswith('comment:'):
+                # transform "performer:Piano=Joe Barr" to "performer=Joe Barr (Piano)"
+                name, desc = name.split(':', 1)
+                if desc:
+                    value += ' (%s)' % desc
+            elif name == "musicip_fingerprint":
+                name = "fingerprint"
+                value = "MusicMagic Fingerprint%s" % value
+            tags.setdefault(name.upper().encode('utf-8'), []).append(value)
+
+        if "totaltracks" in metadata:
+            tags.setdefault(u"TRACKTOTAL", []).append(metadata["totaltracks"])
+        if "totaldiscs" in metadata:
+            tags.setdefault(u"DISCTOTAL", []).append(metadata["totaldiscs"])
+
+        if settings['save_images_to_tags']:
+            for mime, data, filename in metadata.images:
+                image = mutagen.flac.Picture()
+                image.type = 3 # Cover image
+                image.data = data
+                image.mime = mime
+                if self._File == mutagen.flac.FLAC:
+                    file.add_picture(image)
+                else:
+                    tags.setdefault(u"METADATA_BLOCK_PICTURE", []).append(
+                        base64.standard_b64encode(image.write()))
+        file.tags.update(tags)
+        kwargs = {}
+        if self._File == mutagen.flac.FLAC and settings["remove_id3_from_flac"]:
+            kwargs["deleteid3"] = True
+        try:
+            file.save(**kwargs)
+        except TypeError:
+            file.save()
+
+class FLACFile(VCommentFile):
+    """FLAC file."""
+    EXTENSIONS = [".flac"]
+    NAME = "FLAC"
+    _File = mutagen.flac.FLAC
+    def _info(self, metadata, file):
+        super(FLACFile, self)._info(metadata, file)
+        metadata['~format'] = self.NAME
+
+class OggFLACFile(VCommentFile):
+    """FLAC file."""
+    EXTENSIONS = [".oggflac"]
+    NAME = "Ogg FLAC"
+    _File = mutagen.oggflac.OggFLAC
+    def _info(self, metadata, file):
+        super(OggFLACFile, self)._info(metadata, file)
+        metadata['~format'] = self.NAME
+
+class OggSpeexFile(VCommentFile):
+    """Ogg Speex file."""
+    EXTENSIONS = [".spx"]
+    NAME = "Speex"
+    _File = mutagen.oggspeex.OggSpeex
+    def _info(self, metadata, file):
+        super(OggSpeexFile, self)._info(metadata, file)
+        metadata['~format'] = self.NAME
+
+class OggTheoraFile(VCommentFile):
+    """Ogg Theora file."""
+    EXTENSIONS = [".oggtheora"]
+    NAME = "Ogg Theora"
+    _File = mutagen.oggtheora.OggTheora
+    def _info(self, metadata, file):
+        super(OggTheoraFile, self)._info(metadata, file)
+        metadata['~format'] = self.NAME
+
+class OggVorbisFile(VCommentFile):
+    """Ogg Vorbis file."""
+    EXTENSIONS = [".ogg"]
+    NAME = "Ogg Vorbis"
+    _File = mutagen.oggvorbis.OggVorbis
+    def _info(self, metadata, file):
+        super(OggVorbisFile, self)._info(metadata, file)
+        metadata['~format'] = self.NAME
+
+def OggAudioFile(filename):
+    """Generic Ogg audio file."""
+    options = [OggFLACFile, OggSpeexFile, OggVorbisFile]
+    fileobj = file(filename, "rb")
+    results = []
+    try:
+        header = fileobj.read(128)
+        results = [
+            (option._File.score(filename, fileobj, header), option.__name__, option)
+            for option in options]
+    finally:
+        fileobj.close()
+    results.sort()
+    if not results or results[-1][0] <= 0:
+        raise mutagen.ogg.error("unknown Ogg audio format")
+    return results[-1][2](filename)
+
+OggAudioFile.EXTENSIONS = [".oga"]
+OggAudioFile.NAME = "Ogg Audio"
diff --git a/backend/zmusic/picard/formats/wav.py b/backend/zmusic/picard/formats/wav.py
new file mode 100644
index 0000000..0d49a98
--- /dev/null
+++ b/backend/zmusic/picard/formats/wav.py
@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+#
+# Picard, the next-generation MusicBrainz tagger
+# Copyright (C) 2007 Lukáš Lalinský
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+import wave
+from zmusic.picard.file import File
+from zmusic.picard.metadata import Metadata
+from zmusic.picard.util import encode_filename
+
+class WAVFile(File):
+    EXTENSIONS = [".wav"]
+    NAME = "Microsoft WAVE"
+
+    def _load(self, filename):
+        self.log.debug("Loading file %r", filename)
+        f = wave.open(encode_filename(filename), "rb")
+        metadata = Metadata()
+        metadata['~#channels'] = f.getnchannels()
+        metadata['~#bits_per_sample'] = f.getsampwidth() * 8
+        metadata['~#sample_rate'] = f.getframerate()
+        metadata.length = 1000 * f.getnframes() / f.getframerate()
+        metadata['~format'] = 'Microsoft WAVE'
+        self._add_path_to_metadata(metadata)
+        return metadata
+
+    def _save(self, filename, metadata, settings):
+        self.log.debug("Saving file %r", filename)
+        pass
diff --git a/backend/zmusic/picard/metadata.py b/backend/zmusic/picard/metadata.py
new file mode 100644
index 0000000..5074edf
--- /dev/null
+++ b/backend/zmusic/picard/metadata.py
@@ -0,0 +1,184 @@
+# -*- coding: utf-8 -*-
+#
+# Picard, the next-generation MusicBrainz tagger
+# Copyright (C) 2006-2007 Lukáš Lalinský
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+import re
+import unicodedata
+from zmusic.picard.util import format_time, load_release_type_scores
+
+MULTI_VALUED_JOINER = '; '
+
+class Metadata(object):
+    """List of metadata items with dict-like access."""
+
+    __weights = [
+        ('title', 22),
+        ('artist', 6),
+        ('album', 12),
+        ('tracknumber', 6),
+        ('totaltracks', 5),
+    ]
+
+    def __init__(self):
+        super(Metadata, self).__init__()
+        self._items = {}
+        self.images = []
+        self.length = 0
+
+    def add_image(self, mime, data, filename=None):
+        self.images.append((mime, data, filename))
+
+    def __repr__(self):
+        return repr(self._items)
+
+    def copy(self, other):
+        self._items = {}
+        for key, values in other.rawitems():
+            self._items[key] = values[:]
+        self.images = other.images[:]
+        self.length = other.length
+
+    def update(self, other):
+        for name, values in other.rawitems():
+            self._items[name] = values[:]
+        if other.images:
+            self.images = other.images[:]
+        if other.length:
+            self.length = other.length
+
+    def clear(self):
+        self._items = {}
+        self.images = []
+        self.length = 0
+
+    def __get(self, name, default=None):
+        values = self._items.get(name, None)
+        if values:
+            if len(values) > 1:
+                return MULTI_VALUED_JOINER.join(values)
+            else:
+                return values[0]
+        else:
+            return default
+
+    def __set(self, name, values):
+        if not isinstance(values, list):
+            values = [values]
+        values = [v for v in values if v or v == 0]
+        if len(values):
+            self._items[name] = values
+
+    def getall(self, name):
+        return self._items.get(name, [])
+
+    def get(self, name, default=None):
+        return self.__get(name, default)
+
+    def __getitem__(self, name):
+        return self.__get(name, u'')
+
+    def set(self, name, value):
+        self.__set(name, value)
+
+    def __setitem__(self, name, value):
+        self.__set(name, value)
+
+    def add(self, name, value):
+        if value or value == 0:
+            self._items.setdefault(name, []).append(value)
+
+    def add_unique(self, name, value):
+        if value not in self.getall(name):
+            self.add(name, value)
+
+    def keys(self):
+        return self._items.keys()
+
+    def iteritems(self):
+        for name, values in self._items.iteritems():
+            for value in values:
+                yield name, value
+
+    def items(self):
+        """Returns the metadata items.
+
+        >>> m.items()
+        [("key1", "value1"), ("key1", "value2"), ("key2", "value3")]
+        """
+        return list(self.iteritems())
+
+    def rawitems(self):
+        """Returns the metadata items.
+
+        >>> m.rawitems()
+        [("key1", ["value1", "value2"]), ("key2", ["value3"])]
+        """
+        return self._items.items()
+
+    def __contains__(self, name):
+        return name in self._items
+
+    def __delitem__(self, name):
+        del self._items[name]
+
+    def apply_func(self, func):
+        new = Metadata()
+        for key, values in self.rawitems():
+            if not key.startswith("~"):
+                new[key] = map(func, values)
+        self.update(new)
+
+    def strip_whitespace(self):
+        """Strip leading/trailing whitespace.
+
+        >>> m = Metadata()
+        >>> m["foo"] = "  bar  "
+        >>> m["foo"]
+        "  bar  "
+        >>> m.strip_whitespace()
+        >>> m["foo"]
+        "bar"
+        """
+        self.apply_func(lambda s: s.strip())
+
+    def pop(self, key):
+        return self._items.pop(key, None)
+
+
+_album_metadata_processors = []
+_track_metadata_processors = []
+
+
+def register_album_metadata_processor(function):
+    """Registers new album-level metadata processor."""
+    _album_metadata_processors.append(function)
+
+
+def register_track_metadata_processor(function):
+    """Registers new track-level metadata processor."""
+    _track_metadata_processors.append(function)
+
+
+def run_album_metadata_processors(tagger, metadata, release):
+    for processor in _album_metadata_processors:
+        processor(tagger, metadata, release)
+
+
+def run_track_metadata_processors(tagger, metadata, release, track):
+    for processor in _track_metadata_processors:
+        processor(tagger, metadata, track, release)
diff --git a/backend/zmusic/picard/util/__init__.py b/backend/zmusic/picard/util/__init__.py
new file mode 100644
index 0000000..e0ad871
--- /dev/null
+++ b/backend/zmusic/picard/util/__init__.py
@@ -0,0 +1,287 @@
+# -*- coding: utf-8 -*-
+#
+# Picard, the next-generation MusicBrainz tagger
+# Copyright (C) 2004 Robert Kaye
+# Copyright (C) 2006 Lukáš Lalinský
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+import os
+import re
+import sys
+import unicodedata
+from encodings import rot_13;
+from string import Template
+
+
+def asciipunct(s):
+    mapping = {
+        u"…": u"...",
+        u"‘": u"'",
+        u"’": u"'",
+        u"‚": u"'",
+        u"“": u"\"",
+        u"”": u"\"",
+        u"„": u"\"",
+        u"′": u"'",
+        u"″": u"\"",
+        u"‹": u"<",
+        u"›": u">",
+        u"‐": u"-",
+        u"‒": u"-",
+        u"–": u"-",
+        u"−": u"-",
+        u"—": u"-",
+        u"―": u"--",
+    }
+    for orig, repl in mapping.iteritems():
+        s = s.replace(orig, repl)
+    return s
+
+
+
+_io_encoding = sys.getfilesystemencoding()
+
+def encode_filename(filename):
+    """Encode unicode strings to filesystem encoding."""
+    if isinstance(filename, unicode):
+        if os.path.supports_unicode_filenames and sys.platform != "darwin":
+            return filename
+        else:
+            return filename.encode(_io_encoding, 'replace')
+    else:
+        return filename
+
+def decode_filename(filename):
+    """Decode strings from filesystem encoding to unicode."""
+    if isinstance(filename, unicode):
+        return filename
+    else:
+        return filename.decode(_io_encoding)
+
+def pathcmp(a, b):
+    return os.path.normcase(a) == os.path.normcase(b)
+
+def format_time(ms):
+    """Formats time in milliseconds to a string representation."""
+    if ms == 0:
+        return "?:??"
+    else:
+        return "%d:%02d" % (round(ms / 1000.0) / 60, round(ms / 1000.0) % 60)
+
+def sanitize_date(datestr):
+    """Sanitize date format.
+
+    e.g.: "YYYY-00-00" -> "YYYY"
+          "YYYY-  -  " -> "YYYY"
+          ...
+    """
+    date = []
+    for num in datestr.split("-"):
+        try:
+            num = int(num.strip())
+        except ValueError:
+            break
+        if num:
+            date.append(num)
+    return ("", "%04d", "%04d-%02d", "%04d-%02d-%02d")[len(date)] % tuple(date)
+
+_unaccent_dict = {u'Æ': u'AE', u'æ': u'ae', u'Œ': u'OE', u'œ': u'oe', u'ß': 'ss'}
+_re_latin_letter = re.compile(r"^(LATIN [A-Z]+ LETTER [A-Z]+) WITH")
+def unaccent(string):
+    """Remove accents ``string``."""
+    result = []
+    for char in string:
+        if char in _unaccent_dict:
+            char = _unaccent_dict[char]
+        else:
+            try:
+                name = unicodedata.name(char)
+                match = _re_latin_letter.search(name)
+                if match:
+                    char = unicodedata.lookup(match.group(1))
+            except:
+                pass
+        result.append(char)
+    return "".join(result)
+
+_re_non_ascii = re.compile(r'[^\x00-\x7F]', re.UNICODE)
+def replace_non_ascii(string, repl="_"):
+    """Replace non-ASCII characters from ``string`` by ``repl``."""
+    return _re_non_ascii.sub(repl, asciipunct(string))
+
+_re_win32_incompat = re.compile(r'["*:<>?|]', re.UNICODE)
+def replace_win32_incompat(string, repl=u"_"):
+    """Replace win32 filename incompatible characters from ``string`` by
+       ``repl``."""
+    return _re_win32_incompat.sub(repl, string)
+
+_re_non_alphanum = re.compile(r'\W+', re.UNICODE)
+def strip_non_alnum(string):
+    """Remove all non-alphanumeric characters from ``string``."""
+    return _re_non_alphanum.sub(u" ", string).strip()
+
+_re_slashes = re.compile(r'[\\/]', re.UNICODE)
+def sanitize_filename(string, repl="_"):
+    return _re_slashes.sub(repl, string)
+
+def make_short_filename(prefix, filename, max_path_length=240, max_length=200,
+                        mid_length=32, min_length=2):
+    """
+    Attempts to shorten the file name to the maximum allowed length.
+
+    max_path_length: The maximum length of the complete path.
+    max_length: The maximum length of a single file or directory name.
+    mid_length: The medium preferred length of a single file or directory.
+    min_length: The minimum allowed length of a single file or directory.
+    """
+    parts = [part.strip() for part in _re_slashes.split(filename)]
+    parts.reverse()
+    filename = os.path.join(*parts)
+    left = len(prefix) + len(filename) + 1 - max_path_length
+
+    for i in range(len(parts)):
+        left -= max(0, len(parts[i]) - max_length)
+        parts[i] = parts[i][:max_length]
+
+    if left > 0:
+        for i in range(len(parts)):
+            length = len(parts[i]) - mid_length
+            if length > 0:
+                length = min(left, length)
+                parts[i] = parts[i][:-length]
+                left -= length
+                if left <= 0:
+                    break
+
+        if left > 0:
+            for i in range(len(parts)):
+                length = len(parts[i]) - min_length
+                if length > 0:
+                    length = min(left, length)
+                    parts[i] = parts[i][:-length]
+                    left -= length
+                    if left <= 0:
+                        break
+
+            if left > 0:
+                raise IOError, "File name is too long."
+
+    return os.path.join(*[a.strip() for a in reversed(parts)])
+
+
+def _reverse_sortname(sortname):
+    """Reverse sortnames."""
+    chunks = [a.strip() for a in sortname.split(",")]
+    if len(chunks) == 2:
+        return "%s %s" % (chunks[1], chunks[0])
+    elif len(chunks) == 3:
+        return "%s %s %s" % (chunks[2], chunks[1], chunks[0])
+    elif len(chunks) == 4:
+        return "%s %s, %s %s" % (chunks[1], chunks[0], chunks[3], chunks[2])
+    else:
+        return sortname.strip()
+
+
+def translate_from_sortname(name, sortname):
+    """'Translate' the artist name by reversing the sortname."""
+    for c in name:
+        ctg = unicodedata.category(c)
+        if ctg[0] == "L" and unicodedata.name(c).find("LATIN") == -1:
+            for separator in (" & ", "; ", " and ", " vs. ", " with ", " y "):
+                if separator in sortname:
+                    parts = sortname.split(separator)
+                    break
+            else:
+                parts = [sortname]
+                separator = ""
+            return separator.join(map(_reverse_sortname, parts))
+    return name
+
+
+try:
+    from functools import partial
+except ImportError:
+    def partial(func, *args, **keywords):
+        def newfunc(*fargs, **fkeywords):
+            newkeywords = keywords.copy()
+            newkeywords.update(fkeywords)
+            return func(*(args + fargs), **newkeywords)
+        newfunc.func = func
+        newfunc.args = args
+        newfunc.keywords = keywords
+        return newfunc
+
+
+def find_existing_path(path):
+    path = encode_filename(path)
+    while path and not os.path.isdir(path):
+        head, tail = os.path.split(path)
+        if head == path:
+            break
+        path = head
+    return decode_filename(path)
+
+
+def find_executable(name):
+    if sys.platform == 'win32':
+        executables = [name + '.exe']
+    else:
+        executables = [name]
+    paths = [os.path.dirname(sys.executable)] if sys.executable else []
+    paths += os.environ.get('PATH', '').split(os.pathsep)
+    for path in paths:
+        for executable in executables:
+            f = os.path.join(path, executable)
+            if os.path.isfile(f):
+                return f
+
+
+def call_next(func):
+    def func_wrapper(self, *args, **kwargs):
+        next = args[0]
+        result = None
+        try:
+            result = func(self, *args, **kwargs)
+        except:
+            import traceback
+            self.log.error(traceback.format_exc())
+            next(error=sys.exc_info()[1])
+        else:
+            next(result=result)
+    func_wrapper.__name__ = func.__name__
+    return func_wrapper
+
+
+_mbid_format = Template('$h{8}-$h$l-$h$l-$h$l-$h{12}').safe_substitute(h='[0-9a-fA-F]', l='{4}')
+_re_mbid_val = re.compile(_mbid_format)
+def mbid_validate(string):
+    return _re_mbid_val.match(string)
+
+
+def rot13(input):
+    return u''.join(unichr(rot_13.encoding_map.get(ord(c), ord(c))) for c in input)
+
+
+def load_release_type_scores(setting):
+    scores = {}
+    values = setting.split()
+    for i in range(0, len(values), 2):
+        scores[values[i]] = float(values[i+1]) if i+1 < len(values) else 0.0
+    return scores
+
+
+def save_release_type_scores(scores):
+    return " ".join(["%s %.2f" % v for v in scores.iteritems()])
diff --git a/backend/zmusic/picard/util/mimetype.py b/backend/zmusic/picard/util/mimetype.py
new file mode 100644
index 0000000..e332506
--- /dev/null
+++ b/backend/zmusic/picard/util/mimetype.py
@@ -0,0 +1,53 @@
+# -*- coding: utf-8 -*-
+#
+# Picard, the next-generation MusicBrainz tagger
+# Copyright (C) 2009 Philipp Wolfer
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+import os
+
+MIME_TYPE_EXTENSION_MAP = {
+    'image/jpeg': '.jpg',
+    'image/png': '.png',
+    'image/gif': '.gif',
+    'image/tiff': '.tiff',
+}
+
+EXTENSION_MIME_TYPE_MAP = dict([(b, a) for a, b in MIME_TYPE_EXTENSION_MAP.items()])
+
+def get_from_data(data, filename=None, default=None):
+    """Tries to determine the mime type from the given data."""
+    if data.startswith('\xff\xd8\xff'):
+        return 'image/jpeg'
+    elif data.startswith('\x89PNG\x0d\x0a\x1a\x0a'):
+        return 'image/png'
+    elif data.startswith('GIF87a') or data.startswith('GIF89a'):
+        return 'image/gif'
+    elif data.startswith('MM\x00*') or data.startswith('II*\x00'):
+        return 'image/tiff'
+    elif filename:
+        return get_from_filename(filename, default)
+    else:
+        return default
+
+def get_from_filename(filename, default=None):
+    """Tries to determine the mime type from the given filename."""
+    name, ext = os.path.splitext(os.path.basename(filename))
+    return EXTENSION_MIME_TYPE_MAP.get(ext, default)
+
+def get_extension(mimetype, default=None):
+    """Returns the file extension for a given mime type."""
+    return MIME_TYPE_EXTENSION_MAP.get(mimetype, default)
\ No newline at end of file
diff --git a/backend/zmusic/streams.py b/backend/zmusic/streams.py
new file mode 100644
index 0000000..3dca20d
--- /dev/null
+++ b/backend/zmusic/streams.py
@@ -0,0 +1,100 @@
+from flask import Response, request
+from werkzeug.wsgi import FileWrapper
+from werkzeug.datastructures import Headers
+from zmusic import app
+import subprocess
+import os
+import re
+
+class ProcessWrapper(object):
+	def __init__(self, process, buffer_size=8192):
+		self.process = process
+		self.buffer_size = buffer_size
+	def close(self):
+		if self.process.returncode is not None:
+			return
+		self.process.stdout.close()
+		self.process.terminate()
+		self.process.wait()
+	def __iter__(self):
+		return self
+	def __del__(self):
+		self.close()
+	def next(self):
+		try:
+			data = self.process.stdout.read(self.buffer_size)
+		except:
+			self.close()
+			raise StopIteration()
+		if data:
+			return data
+		self.close()
+		raise StopIteration()
+
+def send_process(args, mimetype=None, attachment_filename=None, headers=Headers()):
+	headers.add('Content-Disposition', 'attachment', filename=attachment_filename)
+	def close_fds():
+		# For some reason, ffmpeg flips out if stdin is closed, so we dup2 /dev/null to it.
+		os.dup2(os.open('/dev/null', os.O_RDONLY), 0)
+		os.close(2)
+	process = subprocess.Popen(args, close_fds=True, stdout=subprocess.PIPE, preexec_fn=close_fds)
+	response = ProcessWrapper(process)
+	return Response(response, mimetype=mimetype, headers=headers, direct_passthrough=True)
+
+class PartialFileWrapper(object):
+	def __init__(self, file, offset=0, length=None, buffer_size=8192):
+		self.file = file
+		self.file.seek(offset, os.SEEK_CUR)
+		self.length = length
+		self.buffer_size = buffer_size
+	def close(self):
+		if hasattr(self.file, 'close'):
+			self.file.close()
+	def __iter__(self):
+		return self
+	def next(self):
+		if self.length is not None:
+			if self.length <= 0:
+				raise StopIteration()
+			data = self.file.read(min(self.length, self.buffer_size))
+			if not data:
+				raise StopIteration()
+			if len(data) == 0:
+				raise StopIteration()
+			self.length -= len(data)
+			return data
+		else:
+			data = self.file.read(self.buffer_size)
+			if data:
+				return data
+			raise StopIteration()
+
+def send_file_partial(path, mimetype=None, attachment_filename=None, headers=Headers()):
+	headers.add('Content-Disposition', 'attachment', filename=attachment_filename)
+	if app is not None and app.config['ACCEL_MUSIC_PREFIX']:
+		headers.add('X-Accel-Redirect', os.path.join(app.config['ACCEL_MUSIC_PREFIX'], os.path.relpath(path, app.config['MUSIC_PATH'])))
+		return Response(mimetype=mimetype, headers=headers)
+	
+	file = open(path, 'rb')
+	size = os.path.getsize(path)
+	headers.add('Accept-Ranges', 'bytes')
+	range_header = request.headers.get('Range', None)
+	if not range_header:
+		headers.add('Content-Length', size)
+		return Response(FileWrapper(file), mimetype=mimetype, headers=headers, direct_passthrough=True)
+
+	byte1, byte2 = 0, None
+	m = re.search('(\d+)-(\d*)', range_header)
+	g = m.groups()
+	if g[0]:
+		byte1 = int(g[0])
+	if g[1]:
+		byte2 = int(g[1])
+
+	length = size - byte1
+	if byte2 is not None:
+		length = byte2 - byte1
+	headers.add('Content-Range', 'bytes {0}-{1}/{2}'.format(byte1, byte1 + length - 1, size))
+	headers.add('Content-Length', length)
+
+	return Response(PartialFileWrapper(file, offset=byte1, length=length), 206, mimetype=mimetype, headers=headers, direct_passthrough=True)
diff --git a/frontend/Makefile b/frontend/Makefile
new file mode 100644
index 0000000..7679945
--- /dev/null
+++ b/frontend/Makefile
@@ -0,0 +1,63 @@
+STYLES := bootstrap font-awesome page
+LIBS := jquery underscore backbone
+MODELS := Song SongList DownloadBasket
+VIEWS := SongRow SongTable DownloadSelector
+CONTROLS := AudioPlayer
+APPS := app
+
+JS_DIR := js
+CSS_DIR := css
+LIB_DIR := $(JS_DIR)/lib
+MODEL_DIR := $(JS_DIR)/models
+VIEW_DIR := $(JS_DIR)/views
+CONTROL_DIR := $(JS_DIR)/controls
+
+DEBUG ?= 0
+
+JS_MIN_OUTPUT := $(JS_DIR)/scripts.min.js
+CSS_MIN_OUTPUT := $(CSS_DIR)/styles.min.css
+
+
+
+LIBS_JS := $(patsubst %, $(LIB_DIR)/%.js, $(LIBS))
+MODELS_JS := $(patsubst %, $(MODEL_DIR)/%.js, $(MODELS))  
+VIEWS_JS := $(patsubst %, $(VIEW_DIR)/%.js, $(VIEWS))
+CONTROLS_JS := $(patsubst %, $(CONTROL_DIR)/%.js, $(CONTROLS))
+APPS_JS := $(patsubst %, $(JS_DIR)/%.js, $(APPS))
+JS_INPUT := $(LIBS_JS) $(MODELS_JS) $(VIEWS_JS) $(CONTROLS_JS) $(APPS_JS)
+CSS_INPUT := $(patsubst %, $(CSS_DIR)/%.css, $(STYLES))
+JS_MIN_INPUT := $(patsubst %.js, %.min.js, $(filter-out %.min.js, $(JS_INPUT)))
+CSS_MIN_INPUT := $(patsubst %.css, %.min.css, $(filter-out %.min.css, $(CSS_INPUT)))
+
+JS_COMPILER := java -jar bin/closure-compiler.jar --warning_level QUIET
+CSS_COMPILER := java -jar bin/yui-compressor.jar --type css
+
+.PHONY: all clean
+
+all: $(JS_MIN_OUTPUT) $(CSS_MIN_OUTPUT)
+
+ifeq ($(DEBUG),0)
+%.min.js: %.js
+	@echo "    JS     " $@
+	@$(JS_COMPILER) --js $< --js_output_file $@
+else
+%.min.js: %.js
+	@echo "    JS     " $@
+	@cat $< > $@
+endif
+
+%.min.css: %.css
+	@echo "    CSS    " $@
+	@$(CSS_COMPILER) -o $@ $<
+
+$(JS_MIN_OUTPUT): $(JS_MIN_INPUT)
+	@echo "    CAT    " $@
+	@cat $^ > $@
+
+$(CSS_MIN_OUTPUT): $(CSS_MIN_INPUT)
+	@echo "    CAT    " $@
+	@cat $^ > $@
+
+clean:
+	@echo "    RM     " $(JS_MIN_INPUT) $(JS_MIN_OUTPUT) $(CSS_MIN_INPUT) $(CSS_MIN_OUTPUT)
+	@rm -fv $(JS_MIN_INPUT) $(JS_MIN_OUTPUT) $(CSS_MIN_INPUT) $(CSS_MIN_OUTPUT)
diff --git a/frontend/bin/closure-compiler.jar b/frontend/bin/closure-compiler.jar
new file mode 100644
index 0000000..53037b0
--- /dev/null
+++ b/frontend/bin/closure-compiler.jar
diff --git a/frontend/bin/yui-compressor.jar b/frontend/bin/yui-compressor.jar
new file mode 100644
index 0000000..bf39747
--- /dev/null
+++ b/frontend/bin/yui-compressor.jar
diff --git a/frontend/css/bootstrap.css b/frontend/css/bootstrap.css
new file mode 100644
index 0000000..7e847d4
--- /dev/null
+++ b/frontend/css/bootstrap.css
@@ -0,0 +1,2411 @@
+/*
+ * Bootstrap v2.2.2
+ *
+ * Copyright 2012 Twitter, Inc
+ * Licensed under the Apache License v2.0
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Designed and built with all the love in the world @twitter by @mdo and @fat.
+ */
+.clearfix {
+  *zoom: 1;
+}
+.clearfix:before,
+.clearfix:after {
+  display: table;
+  content: "";
+  line-height: 0;
+}
+.clearfix:after {
+  clear: both;
+}
+.hide-text {
+  font: 0/0 a;
+  color: transparent;
+  text-shadow: none;
+  background-color: transparent;
+  border: 0;
+}
+.input-block-level {
+  display: block;
+  width: 100%;
+  min-height: 30px;
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+article,
+aside,
+details,
+figcaption,
+figure,
+footer,
+header,
+hgroup,
+nav,
+section {
+  display: block;
+}
+audio,
+canvas,
+video {
+  display: inline-block;
+  *display: inline;
+  *zoom: 1;
+}
+audio:not([controls]) {
+  display: none;
+}
+html {
+  font-size: 100%;
+  -webkit-text-size-adjust: 100%;
+  -ms-text-size-adjust: 100%;
+}
+a:focus {
+  outline: thin dotted #333;
+  outline: 5px auto -webkit-focus-ring-color;
+  outline-offset: -2px;
+}
+a:hover,
+a:active {
+  outline: 0;
+}
+sub,
+sup {
+  position: relative;
+  font-size: 75%;
+  line-height: 0;
+  vertical-align: baseline;
+}
+sup {
+  top: -0.5em;
+}
+sub {
+  bottom: -0.25em;
+}
+img {
+  /* Responsive images (ensure images don't scale beyond their parents) */
+
+  max-width: 100%;
+  /* Part 1: Set a maxium relative to the parent */
+
+  width: auto\9;
+  /* IE7-8 need help adjusting responsive images */
+
+  height: auto;
+  /* Part 2: Scale the height according to the width, otherwise you get stretching */
+
+  vertical-align: middle;
+  border: 0;
+  -ms-interpolation-mode: bicubic;
+}
+#map_canvas img,
+.google-maps img {
+  max-width: none;
+}
+button,
+input,
+select,
+textarea {
+  margin: 0;
+  font-size: 100%;
+  vertical-align: middle;
+}
+button,
+input {
+  *overflow: visible;
+  line-height: normal;
+}
+button::-moz-focus-inner,
+input::-moz-focus-inner {
+  padding: 0;
+  border: 0;
+}
+button,
+html input[type="button"],
+input[type="reset"],
+input[type="submit"] {
+  -webkit-appearance: button;
+  cursor: pointer;
+}
+label,
+select,
+button,
+input[type="button"],
+input[type="reset"],
+input[type="submit"],
+input[type="radio"],
+input[type="checkbox"] {
+  cursor: pointer;
+}
+input[type="search"] {
+  -webkit-box-sizing: content-box;
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
+  -webkit-appearance: textfield;
+}
+input[type="search"]::-webkit-search-decoration,
+input[type="search"]::-webkit-search-cancel-button {
+  -webkit-appearance: none;
+}
+textarea {
+  overflow: auto;
+  vertical-align: top;
+}
+@media print {
+  * {
+    text-shadow: none !important;
+    color: #000 !important;
+    background: transparent !important;
+    box-shadow: none !important;
+  }
+  a,
+  a:visited {
+    text-decoration: underline;
+  }
+  a[href]:after {
+    content: " (" attr(href) ")";
+  }
+  abbr[title]:after {
+    content: " (" attr(title) ")";
+  }
+  .ir a:after,
+  a[href^="javascript:"]:after,
+  a[href^="#"]:after {
+    content: "";
+  }
+  pre,
+  blockquote {
+    border: 1px solid #999;
+    page-break-inside: avoid;
+  }
+  thead {
+    display: table-header-group;
+  }
+  tr,
+  img {
+    page-break-inside: avoid;
+  }
+  img {
+    max-width: 100% !important;
+  }
+  @page  {
+    margin: 0.5cm;
+  }
+  p,
+  h2,
+  h3 {
+    orphans: 3;
+    widows: 3;
+  }
+  h2,
+  h3 {
+    page-break-after: avoid;
+  }
+}
+body {
+  margin: 0;
+  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+  font-size: 14px;
+  line-height: 20px;
+  color: #333333;
+  background-color: #ffffff;
+}
+a {
+  color: #0088cc;
+  text-decoration: none;
+}
+a:hover {
+  color: #005580;
+  text-decoration: underline;
+}
+.img-rounded {
+  -webkit-border-radius: 6px;
+  -moz-border-radius: 6px;
+  border-radius: 6px;
+}
+.img-polaroid {
+  padding: 4px;
+  background-color: #fff;
+  border: 1px solid #ccc;
+  border: 1px solid rgba(0, 0, 0, 0.2);
+  -webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+  -moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+}
+.img-circle {
+  -webkit-border-radius: 500px;
+  -moz-border-radius: 500px;
+  border-radius: 500px;
+}
+p {
+  margin: 0 0 10px;
+}
+.lead {
+  margin-bottom: 20px;
+  font-size: 21px;
+  font-weight: 200;
+  line-height: 30px;
+}
+small {
+  font-size: 85%;
+}
+strong {
+  font-weight: bold;
+}
+em {
+  font-style: italic;
+}
+cite {
+  font-style: normal;
+}
+.muted {
+  color: #999999;
+}
+a.muted:hover {
+  color: #808080;
+}
+.text-warning {
+  color: #c09853;
+}
+a.text-warning:hover {
+  color: #a47e3c;
+}
+.text-error {
+  color: #b94a48;
+}
+a.text-error:hover {
+  color: #953b39;
+}
+.text-info {
+  color: #3a87ad;
+}
+a.text-info:hover {
+  color: #2d6987;
+}
+.text-success {
+  color: #468847;
+}
+a.text-success:hover {
+  color: #356635;
+}
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+  margin: 10px 0;
+  font-family: inherit;
+  font-weight: bold;
+  line-height: 20px;
+  color: inherit;
+  text-rendering: optimizelegibility;
+}
+h1 small,
+h2 small,
+h3 small,
+h4 small,
+h5 small,
+h6 small {
+  font-weight: normal;
+  line-height: 1;
+  color: #999999;
+}
+h1,
+h2,
+h3 {
+  line-height: 40px;
+}
+h1 {
+  font-size: 38.5px;
+}
+h2 {
+  font-size: 31.5px;
+}
+h3 {
+  font-size: 24.5px;
+}
+h4 {
+  font-size: 17.5px;
+}
+h5 {
+  font-size: 14px;
+}
+h6 {
+  font-size: 11.9px;
+}
+h1 small {
+  font-size: 24.5px;
+}
+h2 small {
+  font-size: 17.5px;
+}
+h3 small {
+  font-size: 14px;
+}
+h4 small {
+  font-size: 14px;
+}
+.page-header {
+  padding-bottom: 9px;
+  margin: 20px 0 30px;
+  border-bottom: 1px solid #eeeeee;
+}
+ul,
+ol {
+  padding: 0;
+  margin: 0 0 10px 25px;
+}
+ul ul,
+ul ol,
+ol ol,
+ol ul {
+  margin-bottom: 0;
+}
+li {
+  line-height: 20px;
+}
+ul.unstyled,
+ol.unstyled {
+  margin-left: 0;
+  list-style: none;
+}
+ul.inline,
+ol.inline {
+  margin-left: 0;
+  list-style: none;
+}
+ul.inline  > li,
+ol.inline  > li {
+  display: inline-block;
+  padding-left: 5px;
+  padding-right: 5px;
+}
+dl {
+  margin-bottom: 20px;
+}
+dt,
+dd {
+  line-height: 20px;
+}
+dt {
+  font-weight: bold;
+}
+dd {
+  margin-left: 10px;
+}
+.dl-horizontal {
+  *zoom: 1;
+}
+.dl-horizontal:before,
+.dl-horizontal:after {
+  display: table;
+  content: "";
+  line-height: 0;
+}
+.dl-horizontal:after {
+  clear: both;
+}
+.dl-horizontal dt {
+  float: left;
+  width: 160px;
+  clear: left;
+  text-align: right;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+.dl-horizontal dd {
+  margin-left: 180px;
+}
+hr {
+  margin: 20px 0;
+  border: 0;
+  border-top: 1px solid #eeeeee;
+  border-bottom: 1px solid #ffffff;
+}
+abbr[title],
+abbr[data-original-title] {
+  cursor: help;
+  border-bottom: 1px dotted #999999;
+}
+abbr.initialism {
+  font-size: 90%;
+  text-transform: uppercase;
+}
+blockquote {
+  padding: 0 0 0 15px;
+  margin: 0 0 20px;
+  border-left: 5px solid #eeeeee;
+}
+blockquote p {
+  margin-bottom: 0;
+  font-size: 16px;
+  font-weight: 300;
+  line-height: 25px;
+}
+blockquote small {
+  display: block;
+  line-height: 20px;
+  color: #999999;
+}
+blockquote small:before {
+  content: '\2014 \00A0';
+}
+blockquote.pull-right {
+  float: right;
+  padding-right: 15px;
+  padding-left: 0;
+  border-right: 5px solid #eeeeee;
+  border-left: 0;
+}
+blockquote.pull-right p,
+blockquote.pull-right small {
+  text-align: right;
+}
+blockquote.pull-right small:before {
+  content: '';
+}
+blockquote.pull-right small:after {
+  content: '\00A0 \2014';
+}
+q:before,
+q:after,
+blockquote:before,
+blockquote:after {
+  content: "";
+}
+address {
+  display: block;
+  margin-bottom: 20px;
+  font-style: normal;
+  line-height: 20px;
+}
+.label,
+.badge {
+  display: inline-block;
+  padding: 2px 4px;
+  font-size: 11.844px;
+  font-weight: bold;
+  line-height: 14px;
+  color: #ffffff;
+  vertical-align: baseline;
+  white-space: nowrap;
+  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
+  background-color: #999999;
+}
+.label {
+  -webkit-border-radius: 3px;
+  -moz-border-radius: 3px;
+  border-radius: 3px;
+}
+.badge {
+  padding-left: 9px;
+  padding-right: 9px;
+  -webkit-border-radius: 9px;
+  -moz-border-radius: 9px;
+  border-radius: 9px;
+}
+.label:empty,
+.badge:empty {
+  display: none;
+}
+a.label:hover,
+a.badge:hover {
+  color: #ffffff;
+  text-decoration: none;
+  cursor: pointer;
+}
+.label-important,
+.badge-important {
+  background-color: #b94a48;
+}
+.label-important[href],
+.badge-important[href] {
+  background-color: #953b39;
+}
+.label-warning,
+.badge-warning {
+  background-color: #f89406;
+}
+.label-warning[href],
+.badge-warning[href] {
+  background-color: #c67605;
+}
+.label-success,
+.badge-success {
+  background-color: #468847;
+}
+.label-success[href],
+.badge-success[href] {
+  background-color: #356635;
+}
+.label-info,
+.badge-info {
+  background-color: #3a87ad;
+}
+.label-info[href],
+.badge-info[href] {
+  background-color: #2d6987;
+}
+.label-inverse,
+.badge-inverse {
+  background-color: #333333;
+}
+.label-inverse[href],
+.badge-inverse[href] {
+  background-color: #1a1a1a;
+}
+.btn .label,
+.btn .badge {
+  position: relative;
+  top: -1px;
+}
+.btn-mini .label,
+.btn-mini .badge {
+  top: 0;
+}
+table {
+  max-width: 100%;
+  background-color: transparent;
+  border-collapse: collapse;
+  border-spacing: 0;
+}
+.table {
+  width: 100%;
+  margin-bottom: 20px;
+}
+.table th,
+.table td {
+  padding: 8px;
+  line-height: 20px;
+  text-align: left;
+  vertical-align: top;
+  border-top: 1px solid #dddddd;
+}
+.table th {
+  font-weight: bold;
+}
+.table thead th {
+  vertical-align: bottom;
+}
+.table caption + thead tr:first-child th,
+.table caption + thead tr:first-child td,
+.table colgroup + thead tr:first-child th,
+.table colgroup + thead tr:first-child td,
+.table thead:first-child tr:first-child th,
+.table thead:first-child tr:first-child td {
+  border-top: 0;
+}
+.table tbody + tbody {
+  border-top: 2px solid #dddddd;
+}
+.table .table {
+  background-color: #ffffff;
+}
+.table-condensed th,
+.table-condensed td {
+  padding: 4px 5px;
+}
+.table-bordered {
+  border: 1px solid #dddddd;
+  border-collapse: separate;
+  *border-collapse: collapse;
+  border-left: 0;
+  -webkit-border-radius: 4px;
+  -moz-border-radius: 4px;
+  border-radius: 4px;
+}
+.table-bordered th,
+.table-bordered td {
+  border-left: 1px solid #dddddd;
+}
+.table-bordered caption + thead tr:first-child th,
+.table-bordered caption + tbody tr:first-child th,
+.table-bordered caption + tbody tr:first-child td,
+.table-bordered colgroup + thead tr:first-child th,
+.table-bordered colgroup + tbody tr:first-child th,
+.table-bordered colgroup + tbody tr:first-child td,
+.table-bordered thead:first-child tr:first-child th,
+.table-bordered tbody:first-child tr:first-child th,
+.table-bordered tbody:first-child tr:first-child td {
+  border-top: 0;
+}
+.table-bordered thead:first-child tr:first-child > th:first-child,
+.table-bordered tbody:first-child tr:first-child > td:first-child {
+  -webkit-border-top-left-radius: 4px;
+  -moz-border-radius-topleft: 4px;
+  border-top-left-radius: 4px;
+}
+.table-bordered thead:first-child tr:first-child > th:last-child,
+.table-bordered tbody:first-child tr:first-child > td:last-child {
+  -webkit-border-top-right-radius: 4px;
+  -moz-border-radius-topright: 4px;
+  border-top-right-radius: 4px;
+}
+.table-bordered thead:last-child tr:last-child > th:first-child,
+.table-bordered tbody:last-child tr:last-child > td:first-child,
+.table-bordered tfoot:last-child tr:last-child > td:first-child {
+  -webkit-border-bottom-left-radius: 4px;
+  -moz-border-radius-bottomleft: 4px;
+  border-bottom-left-radius: 4px;
+}
+.table-bordered thead:last-child tr:last-child > th:last-child,
+.table-bordered tbody:last-child tr:last-child > td:last-child,
+.table-bordered tfoot:last-child tr:last-child > td:last-child {
+  -webkit-border-bottom-right-radius: 4px;
+  -moz-border-radius-bottomright: 4px;
+  border-bottom-right-radius: 4px;
+}
+.table-bordered tfoot + tbody:last-child tr:last-child td:first-child {
+  -webkit-border-bottom-left-radius: 0;
+  -moz-border-radius-bottomleft: 0;
+  border-bottom-left-radius: 0;
+}
+.table-bordered tfoot + tbody:last-child tr:last-child td:last-child {
+  -webkit-border-bottom-right-radius: 0;
+  -moz-border-radius-bottomright: 0;
+  border-bottom-right-radius: 0;
+}
+.table-bordered caption + thead tr:first-child th:first-child,
+.table-bordered caption + tbody tr:first-child td:first-child,
+.table-bordered colgroup + thead tr:first-child th:first-child,
+.table-bordered colgroup + tbody tr:first-child td:first-child {
+  -webkit-border-top-left-radius: 4px;
+  -moz-border-radius-topleft: 4px;
+  border-top-left-radius: 4px;
+}
+.table-bordered caption + thead tr:first-child th:last-child,
+.table-bordered caption + tbody tr:first-child td:last-child,
+.table-bordered colgroup + thead tr:first-child th:last-child,
+.table-bordered colgroup + tbody tr:first-child td:last-child {
+  -webkit-border-top-right-radius: 4px;
+  -moz-border-radius-topright: 4px;
+  border-top-right-radius: 4px;
+}
+.table-striped tbody > tr:nth-child(odd) > td,
+.table-striped tbody > tr:nth-child(odd) > th {
+  background-color: #f9f9f9;
+}
+.table-hover tbody tr:hover td,
+.table-hover tbody tr:hover th {
+  background-color: #f5f5f5;
+}
+table td[class*="span"],
+table th[class*="span"],
+.row-fluid table td[class*="span"],
+.row-fluid table th[class*="span"] {
+  display: table-cell;
+  float: none;
+  margin-left: 0;
+}
+.table td.span1,
+.table th.span1 {
+  float: none;
+  width: 44px;
+  margin-left: 0;
+}
+.table td.span2,
+.table th.span2 {
+  float: none;
+  width: 124px;
+  margin-left: 0;
+}
+.table td.span3,
+.table th.span3 {
+  float: none;
+  width: 204px;
+  margin-left: 0;
+}
+.table td.span4,
+.table th.span4 {
+  float: none;
+  width: 284px;
+  margin-left: 0;
+}
+.table td.span5,
+.table th.span5 {
+  float: none;
+  width: 364px;
+  margin-left: 0;
+}
+.table td.span6,
+.table th.span6 {
+  float: none;
+  width: 444px;
+  margin-left: 0;
+}
+.table td.span7,
+.table th.span7 {
+  float: none;
+  width: 524px;
+  margin-left: 0;
+}
+.table td.span8,
+.table th.span8 {
+  float: none;
+  width: 604px;
+  margin-left: 0;
+}
+.table td.span9,
+.table th.span9 {
+  float: none;
+  width: 684px;
+  margin-left: 0;
+}
+.table td.span10,
+.table th.span10 {
+  float: none;
+  width: 764px;
+  margin-left: 0;
+}
+.table td.span11,
+.table th.span11 {
+  float: none;
+  width: 844px;
+  margin-left: 0;
+}
+.table td.span12,
+.table th.span12 {
+  float: none;
+  width: 924px;
+  margin-left: 0;
+}
+.table tbody tr.success td {
+  background-color: #dff0d8;
+}
+.table tbody tr.error td {
+  background-color: #f2dede;
+}
+.table tbody tr.warning td {
+  background-color: #fcf8e3;
+}
+.table tbody tr.info td {
+  background-color: #d9edf7;
+}
+.table-hover tbody tr.success:hover td {
+  background-color: #d0e9c6;
+}
+.table-hover tbody tr.error:hover td {
+  background-color: #ebcccc;
+}
+.table-hover tbody tr.warning:hover td {
+  background-color: #faf2cc;
+}
+.table-hover tbody tr.info:hover td {
+  background-color: #c4e3f3;
+}
+form {
+  margin: 0 0 20px;
+}
+fieldset {
+  padding: 0;
+  margin: 0;
+  border: 0;
+}
+legend {
+  display: block;
+  width: 100%;
+  padding: 0;
+  margin-bottom: 20px;
+  font-size: 21px;
+  line-height: 40px;
+  color: #333333;
+  border: 0;
+  border-bottom: 1px solid #e5e5e5;
+}
+legend small {
+  font-size: 15px;
+  color: #999999;
+}
+label,
+input,
+button,
+select,
+textarea {
+  font-size: 14px;
+  font-weight: normal;
+  line-height: 20px;
+}
+input,
+button,
+select,
+textarea {
+  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+}
+label {
+  display: block;
+  margin-bottom: 5px;
+}
+select,
+textarea,
+input[type="text"],
+input[type="password"],
+input[type="datetime"],
+input[type="datetime-local"],
+input[type="date"],
+input[type="month"],
+input[type="time"],
+input[type="week"],
+input[type="number"],
+input[type="email"],
+input[type="url"],
+input[type="search"],
+input[type="tel"],
+input[type="color"],
+.uneditable-input {
+  display: inline-block;
+  height: 20px;
+  padding: 4px 6px;
+  margin-bottom: 10px;
+  font-size: 14px;
+  line-height: 20px;
+  color: #555555;
+  -webkit-border-radius: 4px;
+  -moz-border-radius: 4px;
+  border-radius: 4px;
+  vertical-align: middle;
+}
+input,
+textarea,
+.uneditable-input {
+  width: 206px;
+}
+textarea {
+  height: auto;
+}
+textarea,
+input[type="text"],
+input[type="password"],
+input[type="datetime"],
+input[type="datetime-local"],
+input[type="date"],
+input[type="month"],
+input[type="time"],
+input[type="week"],
+input[type="number"],
+input[type="email"],
+input[type="url"],
+input[type="search"],
+input[type="tel"],
+input[type="color"],
+.uneditable-input {
+  background-color: #ffffff;
+  border: 1px solid #cccccc;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  -webkit-transition: border linear .2s, box-shadow linear .2s;
+  -moz-transition: border linear .2s, box-shadow linear .2s;
+  -o-transition: border linear .2s, box-shadow linear .2s;
+  transition: border linear .2s, box-shadow linear .2s;
+}
+textarea:focus,
+input[type="text"]:focus,
+input[type="password"]:focus,
+input[type="datetime"]:focus,
+input[type="datetime-local"]:focus,
+input[type="date"]:focus,
+input[type="month"]:focus,
+input[type="time"]:focus,
+input[type="week"]:focus,
+input[type="number"]:focus,
+input[type="email"]:focus,
+input[type="url"]:focus,
+input[type="search"]:focus,
+input[type="tel"]:focus,
+input[type="color"]:focus,
+.uneditable-input:focus {
+  border-color: rgba(82, 168, 236, 0.8);
+  outline: 0;
+  outline: thin dotted \9;
+  /* IE6-9 */
+
+  -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(82,168,236,.6);
+  -moz-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(82,168,236,.6);
+  box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(82,168,236,.6);
+}
+input[type="radio"],
+input[type="checkbox"] {
+  margin: 4px 0 0;
+  *margin-top: 0;
+  /* IE7 */
+
+  margin-top: 1px \9;
+  /* IE8-9 */
+
+  line-height: normal;
+}
+input[type="file"],
+input[type="image"],
+input[type="submit"],
+input[type="reset"],
+input[type="button"],
+input[type="radio"],
+input[type="checkbox"] {
+  width: auto;
+}
+select,
+input[type="file"] {
+  height: 30px;
+  /* In IE7, the height of the select element cannot be changed by height, only font-size */
+
+  *margin-top: 4px;
+  /* For IE7, add top margin to align select with labels */
+
+  line-height: 30px;
+}
+select {
+  width: 220px;
+  border: 1px solid #cccccc;
+  background-color: #ffffff;
+}
+select[multiple],
+select[size] {
+  height: auto;
+}
+select:focus,
+input[type="file"]:focus,
+input[type="radio"]:focus,
+input[type="checkbox"]:focus {
+  outline: thin dotted #333;
+  outline: 5px auto -webkit-focus-ring-color;
+  outline-offset: -2px;
+}
+.uneditable-input,
+.uneditable-textarea {
+  color: #999999;
+  background-color: #fcfcfc;
+  border-color: #cccccc;
+  -webkit-box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.025);
+  -moz-box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.025);
+  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.025);
+  cursor: not-allowed;
+}
+.uneditable-input {
+  overflow: hidden;
+  white-space: nowrap;
+}
+.uneditable-textarea {
+  width: auto;
+  height: auto;
+}
+input:-moz-placeholder,
+textarea:-moz-placeholder {
+  color: #999999;
+}
+input:-ms-input-placeholder,
+textarea:-ms-input-placeholder {
+  color: #999999;
+}
+input::-webkit-input-placeholder,
+textarea::-webkit-input-placeholder {
+  color: #999999;
+}
+.radio,
+.checkbox {
+  min-height: 20px;
+  padding-left: 20px;
+}
+.radio input[type="radio"],
+.checkbox input[type="checkbox"] {
+  float: left;
+  margin-left: -20px;
+}
+.controls > .radio:first-child,
+.controls > .checkbox:first-child {
+  padding-top: 5px;
+}
+.radio.inline,
+.checkbox.inline {
+  display: inline-block;
+  padding-top: 5px;
+  margin-bottom: 0;
+  vertical-align: middle;
+}
+.radio.inline + .radio.inline,
+.checkbox.inline + .checkbox.inline {
+  margin-left: 10px;
+}
+.input-mini {
+  width: 60px;
+}
+.input-small {
+  width: 90px;
+}
+.input-medium {
+  width: 150px;
+}
+.input-large {
+  width: 210px;
+}
+.input-xlarge {
+  width: 270px;
+}
+.input-xxlarge {
+  width: 530px;
+}
+input[class*="span"],
+select[class*="span"],
+textarea[class*="span"],
+.uneditable-input[class*="span"],
+.row-fluid input[class*="span"],
+.row-fluid select[class*="span"],
+.row-fluid textarea[class*="span"],
+.row-fluid .uneditable-input[class*="span"] {
+  float: none;
+  margin-left: 0;
+}
+.input-append input[class*="span"],
+.input-append .uneditable-input[class*="span"],
+.input-prepend input[class*="span"],
+.input-prepend .uneditable-input[class*="span"],
+.row-fluid input[class*="span"],
+.row-fluid select[class*="span"],
+.row-fluid textarea[class*="span"],
+.row-fluid .uneditable-input[class*="span"],
+.row-fluid .input-prepend [class*="span"],
+.row-fluid .input-append [class*="span"] {
+  display: inline-block;
+}
+input,
+textarea,
+.uneditable-input {
+  margin-left: 0;
+}
+.controls-row [class*="span"] + [class*="span"] {
+  margin-left: 20px;
+}
+input.span12, textarea.span12, .uneditable-input.span12 {
+  width: 926px;
+}
+input.span11, textarea.span11, .uneditable-input.span11 {
+  width: 846px;
+}
+input.span10, textarea.span10, .uneditable-input.span10 {
+  width: 766px;
+}
+input.span9, textarea.span9, .uneditable-input.span9 {
+  width: 686px;
+}
+input.span8, textarea.span8, .uneditable-input.span8 {
+  width: 606px;
+}
+input.span7, textarea.span7, .uneditable-input.span7 {
+  width: 526px;
+}
+input.span6, textarea.span6, .uneditable-input.span6 {
+  width: 446px;
+}
+input.span5, textarea.span5, .uneditable-input.span5 {
+  width: 366px;
+}
+input.span4, textarea.span4, .uneditable-input.span4 {
+  width: 286px;
+}
+input.span3, textarea.span3, .uneditable-input.span3 {
+  width: 206px;
+}
+input.span2, textarea.span2, .uneditable-input.span2 {
+  width: 126px;
+}
+input.span1, textarea.span1, .uneditable-input.span1 {
+  width: 46px;
+}
+.controls-row {
+  *zoom: 1;
+}
+.controls-row:before,
+.controls-row:after {
+  display: table;
+  content: "";
+  line-height: 0;
+}
+.controls-row:after {
+  clear: both;
+}
+.controls-row [class*="span"],
+.row-fluid .controls-row [class*="span"] {
+  float: left;
+}
+.controls-row .checkbox[class*="span"],
+.controls-row .radio[class*="span"] {
+  padding-top: 5px;
+}
+input[disabled],
+select[disabled],
+textarea[disabled],
+input[readonly],
+select[readonly],
+textarea[readonly] {
+  cursor: not-allowed;
+  background-color: #eeeeee;
+}
+input[type="radio"][disabled],
+input[type="checkbox"][disabled],
+input[type="radio"][readonly],
+input[type="checkbox"][readonly] {
+  background-color: transparent;
+}
+.control-group.warning .control-label,
+.control-group.warning .help-block,
+.control-group.warning .help-inline {
+  color: #c09853;
+}
+.control-group.warning .checkbox,
+.control-group.warning .radio,
+.control-group.warning input,
+.control-group.warning select,
+.control-group.warning textarea {
+  color: #c09853;
+}
+.control-group.warning input,
+.control-group.warning select,
+.control-group.warning textarea {
+  border-color: #c09853;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+}
+.control-group.warning input:focus,
+.control-group.warning select:focus,
+.control-group.warning textarea:focus {
+  border-color: #a47e3c;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #dbc59e;
+  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #dbc59e;
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #dbc59e;
+}
+.control-group.warning .input-prepend .add-on,
+.control-group.warning .input-append .add-on {
+  color: #c09853;
+  background-color: #fcf8e3;
+  border-color: #c09853;
+}
+.control-group.error .control-label,
+.control-group.error .help-block,
+.control-group.error .help-inline {
+  color: #b94a48;
+}
+.control-group.error .checkbox,
+.control-group.error .radio,
+.control-group.error input,
+.control-group.error select,
+.control-group.error textarea {
+  color: #b94a48;
+}
+.control-group.error input,
+.control-group.error select,
+.control-group.error textarea {
+  border-color: #b94a48;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+}
+.control-group.error input:focus,
+.control-group.error select:focus,
+.control-group.error textarea:focus {
+  border-color: #953b39;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #d59392;
+  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #d59392;
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #d59392;
+}
+.control-group.error .input-prepend .add-on,
+.control-group.error .input-append .add-on {
+  color: #b94a48;
+  background-color: #f2dede;
+  border-color: #b94a48;
+}
+.control-group.success .control-label,
+.control-group.success .help-block,
+.control-group.success .help-inline {
+  color: #468847;
+}
+.control-group.success .checkbox,
+.control-group.success .radio,
+.control-group.success input,
+.control-group.success select,
+.control-group.success textarea {
+  color: #468847;
+}
+.control-group.success input,
+.control-group.success select,
+.control-group.success textarea {
+  border-color: #468847;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+}
+.control-group.success input:focus,
+.control-group.success select:focus,
+.control-group.success textarea:focus {
+  border-color: #356635;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #7aba7b;
+  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #7aba7b;
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #7aba7b;
+}
+.control-group.success .input-prepend .add-on,
+.control-group.success .input-append .add-on {
+  color: #468847;
+  background-color: #dff0d8;
+  border-color: #468847;
+}
+.control-group.info .control-label,
+.control-group.info .help-block,
+.control-group.info .help-inline {
+  color: #3a87ad;
+}
+.control-group.info .checkbox,
+.control-group.info .radio,
+.control-group.info input,
+.control-group.info select,
+.control-group.info textarea {
+  color: #3a87ad;
+}
+.control-group.info input,
+.control-group.info select,
+.control-group.info textarea {
+  border-color: #3a87ad;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+}
+.control-group.info input:focus,
+.control-group.info select:focus,
+.control-group.info textarea:focus {
+  border-color: #2d6987;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #7ab5d3;
+  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #7ab5d3;
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 6px #7ab5d3;
+}
+.control-group.info .input-prepend .add-on,
+.control-group.info .input-append .add-on {
+  color: #3a87ad;
+  background-color: #d9edf7;
+  border-color: #3a87ad;
+}
+input:focus:invalid,
+textarea:focus:invalid,
+select:focus:invalid {
+  color: #b94a48;
+  border-color: #ee5f5b;
+}
+input:focus:invalid:focus,
+textarea:focus:invalid:focus,
+select:focus:invalid:focus {
+  border-color: #e9322d;
+  -webkit-box-shadow: 0 0 6px #f8b9b7;
+  -moz-box-shadow: 0 0 6px #f8b9b7;
+  box-shadow: 0 0 6px #f8b9b7;
+}
+.form-actions {
+  padding: 19px 20px 20px;
+  margin-top: 20px;
+  margin-bottom: 20px;
+  background-color: #f5f5f5;
+  border-top: 1px solid #e5e5e5;
+  *zoom: 1;
+}
+.form-actions:before,
+.form-actions:after {
+  display: table;
+  content: "";
+  line-height: 0;
+}
+.form-actions:after {
+  clear: both;
+}
+.help-block,
+.help-inline {
+  color: #595959;
+}
+.help-block {
+  display: block;
+  margin-bottom: 10px;
+}
+.help-inline {
+  display: inline-block;
+  *display: inline;
+  /* IE7 inline-block hack */
+
+  *zoom: 1;
+  vertical-align: middle;
+  padding-left: 5px;
+}
+.input-append,
+.input-prepend {
+  margin-bottom: 5px;
+  font-size: 0;
+  white-space: nowrap;
+}
+.input-append input,
+.input-prepend input,
+.input-append select,
+.input-prepend select,
+.input-append .uneditable-input,
+.input-prepend .uneditable-input,
+.input-append .dropdown-menu,
+.input-prepend .dropdown-menu {
+  font-size: 14px;
+}
+.input-append input,
+.input-prepend input,
+.input-append select,
+.input-prepend select,
+.input-append .uneditable-input,
+.input-prepend .uneditable-input {
+  position: relative;
+  margin-bottom: 0;
+  *margin-left: 0;
+  vertical-align: top;
+  -webkit-border-radius: 0 4px 4px 0;
+  -moz-border-radius: 0 4px 4px 0;
+  border-radius: 0 4px 4px 0;
+}
+.input-append input:focus,
+.input-prepend input:focus,
+.input-append select:focus,
+.input-prepend select:focus,
+.input-append .uneditable-input:focus,
+.input-prepend .uneditable-input:focus {
+  z-index: 2;
+}
+.input-append .add-on,
+.input-prepend .add-on {
+  display: inline-block;
+  width: auto;
+  height: 20px;
+  min-width: 16px;
+  padding: 4px 5px;
+  font-size: 14px;
+  font-weight: normal;
+  line-height: 20px;
+  text-align: center;
+  text-shadow: 0 1px 0 #ffffff;
+  background-color: #eeeeee;
+  border: 1px solid #ccc;
+}
+.input-append .add-on,
+.input-prepend .add-on,
+.input-append .btn,
+.input-prepend .btn,
+.input-append .btn-group > .dropdown-toggle,
+.input-prepend .btn-group > .dropdown-toggle {
+  vertical-align: top;
+  -webkit-border-radius: 0;
+  -moz-border-radius: 0;
+  border-radius: 0;
+}
+.input-append .active,
+.input-prepend .active {
+  background-color: #a9dba9;
+  border-color: #46a546;
+}
+.input-prepend .add-on,
+.input-prepend .btn {
+  margin-right: -1px;
+}
+.input-prepend .add-on:first-child,
+.input-prepend .btn:first-child {
+  -webkit-border-radius: 4px 0 0 4px;
+  -moz-border-radius: 4px 0 0 4px;
+  border-radius: 4px 0 0 4px;
+}
+.input-append input,
+.input-append select,
+.input-append .uneditable-input {
+  -webkit-border-radius: 4px 0 0 4px;
+  -moz-border-radius: 4px 0 0 4px;
+  border-radius: 4px 0 0 4px;
+}
+.input-append input + .btn-group .btn:last-child,
+.input-append select + .btn-group .btn:last-child,
+.input-append .uneditable-input + .btn-group .btn:last-child {
+  -webkit-border-radius: 0 4px 4px 0;
+  -moz-border-radius: 0 4px 4px 0;
+  border-radius: 0 4px 4px 0;
+}
+.input-append .add-on,
+.input-append .btn,
+.input-append .btn-group {
+  margin-left: -1px;
+}
+.input-append .add-on:last-child,
+.input-append .btn:last-child,
+.input-append .btn-group:last-child > .dropdown-toggle {
+  -webkit-border-radius: 0 4px 4px 0;
+  -moz-border-radius: 0 4px 4px 0;
+  border-radius: 0 4px 4px 0;
+}
+.input-prepend.input-append input,
+.input-prepend.input-append select,
+.input-prepend.input-append .uneditable-input {
+  -webkit-border-radius: 0;
+  -moz-border-radius: 0;
+  border-radius: 0;
+}
+.input-prepend.input-append input + .btn-group .btn,
+.input-prepend.input-append select + .btn-group .btn,
+.input-prepend.input-append .uneditable-input + .btn-group .btn {
+  -webkit-border-radius: 0 4px 4px 0;
+  -moz-border-radius: 0 4px 4px 0;
+  border-radius: 0 4px 4px 0;
+}
+.input-prepend.input-append .add-on:first-child,
+.input-prepend.input-append .btn:first-child {
+  margin-right: -1px;
+  -webkit-border-radius: 4px 0 0 4px;
+  -moz-border-radius: 4px 0 0 4px;
+  border-radius: 4px 0 0 4px;
+}
+.input-prepend.input-append .add-on:last-child,
+.input-prepend.input-append .btn:last-child {
+  margin-left: -1px;
+  -webkit-border-radius: 0 4px 4px 0;
+  -moz-border-radius: 0 4px 4px 0;
+  border-radius: 0 4px 4px 0;
+}
+.input-prepend.input-append .btn-group:first-child {
+  margin-left: 0;
+}
+input.search-query {
+  padding-right: 14px;
+  padding-right: 4px \9;
+  padding-left: 14px;
+  padding-left: 4px \9;
+  /* IE7-8 doesn't have border-radius, so don't indent the padding */
+
+  margin-bottom: 0;
+  -webkit-border-radius: 15px;
+  -moz-border-radius: 15px;
+  border-radius: 15px;
+}
+/* Allow for input prepend/append in search forms */
+.form-search .input-append .search-query,
+.form-search .input-prepend .search-query {
+  -webkit-border-radius: 0;
+  -moz-border-radius: 0;
+  border-radius: 0;
+}
+.form-search .input-append .search-query {
+  -webkit-border-radius: 14px 0 0 14px;
+  -moz-border-radius: 14px 0 0 14px;
+  border-radius: 14px 0 0 14px;
+}
+.form-search .input-append .btn {
+  -webkit-border-radius: 0 14px 14px 0;
+  -moz-border-radius: 0 14px 14px 0;
+  border-radius: 0 14px 14px 0;
+}
+.form-search .input-prepend .search-query {
+  -webkit-border-radius: 0 14px 14px 0;
+  -moz-border-radius: 0 14px 14px 0;
+  border-radius: 0 14px 14px 0;
+}
+.form-search .input-prepend .btn {
+  -webkit-border-radius: 14px 0 0 14px;
+  -moz-border-radius: 14px 0 0 14px;
+  border-radius: 14px 0 0 14px;
+}
+.form-search input,
+.form-inline input,
+.form-horizontal input,
+.form-search textarea,
+.form-inline textarea,
+.form-horizontal textarea,
+.form-search select,
+.form-inline select,
+.form-horizontal select,
+.form-search .help-inline,
+.form-inline .help-inline,
+.form-horizontal .help-inline,
+.form-search .uneditable-input,
+.form-inline .uneditable-input,
+.form-horizontal .uneditable-input,
+.form-search .input-prepend,
+.form-inline .input-prepend,
+.form-horizontal .input-prepend,
+.form-search .input-append,
+.form-inline .input-append,
+.form-horizontal .input-append {
+  display: inline-block;
+  *display: inline;
+  /* IE7 inline-block hack */
+
+  *zoom: 1;
+  margin-bottom: 0;
+  vertical-align: middle;
+}
+.form-search .hide,
+.form-inline .hide,
+.form-horizontal .hide {
+  display: none;
+}
+.form-search label,
+.form-inline label,
+.form-search .btn-group,
+.form-inline .btn-group {
+  display: inline-block;
+}
+.form-search .input-append,
+.form-inline .input-append,
+.form-search .input-prepend,
+.form-inline .input-prepend {
+  margin-bottom: 0;
+}
+.form-search .radio,
+.form-search .checkbox,
+.form-inline .radio,
+.form-inline .checkbox {
+  padding-left: 0;
+  margin-bottom: 0;
+  vertical-align: middle;
+}
+.form-search .radio input[type="radio"],
+.form-search .checkbox input[type="checkbox"],
+.form-inline .radio input[type="radio"],
+.form-inline .checkbox input[type="checkbox"] {
+  float: left;
+  margin-right: 3px;
+  margin-left: 0;
+}
+.control-group {
+  margin-bottom: 10px;
+}
+legend + .control-group {
+  margin-top: 20px;
+  -webkit-margin-top-collapse: separate;
+}
+.form-horizontal .control-group {
+  margin-bottom: 20px;
+  *zoom: 1;
+}
+.form-horizontal .control-group:before,
+.form-horizontal .control-group:after {
+  display: table;
+  content: "";
+  line-height: 0;
+}
+.form-horizontal .control-group:after {
+  clear: both;
+}
+.form-horizontal .control-label {
+  float: left;
+  width: 160px;
+  padding-top: 5px;
+  text-align: right;
+}
+.form-horizontal .controls {
+  *display: inline-block;
+  *padding-left: 20px;
+  margin-left: 180px;
+  *margin-left: 0;
+}
+.form-horizontal .controls:first-child {
+  *padding-left: 180px;
+}
+.form-horizontal .help-block {
+  margin-bottom: 0;
+}
+.form-horizontal input + .help-block,
+.form-horizontal select + .help-block,
+.form-horizontal textarea + .help-block,
+.form-horizontal .uneditable-input + .help-block,
+.form-horizontal .input-prepend + .help-block,
+.form-horizontal .input-append + .help-block {
+  margin-top: 10px;
+}
+.form-horizontal .form-actions {
+  padding-left: 180px;
+}
+.btn {
+  display: inline-block;
+  *display: inline;
+  /* IE7 inline-block hack */
+
+  *zoom: 1;
+  padding: 4px 12px;
+  margin-bottom: 0;
+  font-size: 14px;
+  line-height: 20px;
+  text-align: center;
+  vertical-align: middle;
+  cursor: pointer;
+  color: #333333;
+  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.75);
+  background-color: #f5f5f5;
+  background-image: -moz-linear-gradient(top, #ffffff, #e6e6e6);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ffffff), to(#e6e6e6));
+  background-image: -webkit-linear-gradient(top, #ffffff, #e6e6e6);
+  background-image: -o-linear-gradient(top, #ffffff, #e6e6e6);
+  background-image: linear-gradient(to bottom, #ffffff, #e6e6e6);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffffff', endColorstr='#ffe6e6e6', GradientType=0);
+  border-color: #e6e6e6 #e6e6e6 #bfbfbf;
+  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
+  *background-color: #e6e6e6;
+  /* Darken IE7 buttons by default so they stand out more given they won't have borders */
+
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+  border: 1px solid #bbbbbb;
+  *border: 0;
+  border-bottom-color: #a2a2a2;
+  -webkit-border-radius: 4px;
+  -moz-border-radius: 4px;
+  border-radius: 4px;
+  *margin-left: .3em;
+  -webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05);
+  -moz-box-shadow: inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05);
+  box-shadow: inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05);
+}
+.btn:hover,
+.btn:active,
+.btn.active,
+.btn.disabled,
+.btn[disabled] {
+  color: #333333;
+  background-color: #e6e6e6;
+  *background-color: #d9d9d9;
+}
+.btn:active,
+.btn.active {
+  background-color: #cccccc \9;
+}
+.btn:first-child {
+  *margin-left: 0;
+}
+.btn:hover {
+  color: #333333;
+  text-decoration: none;
+  background-position: 0 -15px;
+  -webkit-transition: background-position 0.1s linear;
+  -moz-transition: background-position 0.1s linear;
+  -o-transition: background-position 0.1s linear;
+  transition: background-position 0.1s linear;
+}
+.btn:focus {
+  outline: thin dotted #333;
+  outline: 5px auto -webkit-focus-ring-color;
+  outline-offset: -2px;
+}
+.btn.active,
+.btn:active {
+  background-image: none;
+  outline: 0;
+  -webkit-box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05);
+  -moz-box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05);
+  box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05);
+}
+.btn.disabled,
+.btn[disabled] {
+  cursor: default;
+  background-image: none;
+  opacity: 0.65;
+  filter: alpha(opacity=65);
+  -webkit-box-shadow: none;
+  -moz-box-shadow: none;
+  box-shadow: none;
+}
+.btn-large {
+  padding: 11px 19px;
+  font-size: 17.5px;
+  -webkit-border-radius: 6px;
+  -moz-border-radius: 6px;
+  border-radius: 6px;
+}
+.btn-large [class^="icon-"],
+.btn-large [class*=" icon-"] {
+  margin-top: 4px;
+}
+.btn-small {
+  padding: 2px 10px;
+  font-size: 11.9px;
+  -webkit-border-radius: 3px;
+  -moz-border-radius: 3px;
+  border-radius: 3px;
+}
+.btn-small [class^="icon-"],
+.btn-small [class*=" icon-"] {
+  margin-top: 0;
+}
+.btn-mini [class^="icon-"],
+.btn-mini [class*=" icon-"] {
+  margin-top: -1px;
+}
+.btn-mini {
+  padding: 0 6px;
+  font-size: 10.5px;
+  -webkit-border-radius: 3px;
+  -moz-border-radius: 3px;
+  border-radius: 3px;
+}
+.btn-block {
+  display: block;
+  width: 100%;
+  padding-left: 0;
+  padding-right: 0;
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+.btn-block + .btn-block {
+  margin-top: 5px;
+}
+input[type="submit"].btn-block,
+input[type="reset"].btn-block,
+input[type="button"].btn-block {
+  width: 100%;
+}
+.btn-primary.active,
+.btn-warning.active,
+.btn-danger.active,
+.btn-success.active,
+.btn-info.active,
+.btn-inverse.active {
+  color: rgba(255, 255, 255, 0.75);
+}
+.btn {
+  border-color: #c5c5c5;
+  border-color: rgba(0, 0, 0, 0.15) rgba(0, 0, 0, 0.15) rgba(0, 0, 0, 0.25);
+}
+.btn-primary {
+  color: #ffffff;
+  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
+  background-color: #006dcc;
+  background-image: -moz-linear-gradient(top, #0088cc, #0044cc);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#0088cc), to(#0044cc));
+  background-image: -webkit-linear-gradient(top, #0088cc, #0044cc);
+  background-image: -o-linear-gradient(top, #0088cc, #0044cc);
+  background-image: linear-gradient(to bottom, #0088cc, #0044cc);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff0088cc', endColorstr='#ff0044cc', GradientType=0);
+  border-color: #0044cc #0044cc #002a80;
+  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
+  *background-color: #0044cc;
+  /* Darken IE7 buttons by default so they stand out more given they won't have borders */
+
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+}
+.btn-primary:hover,
+.btn-primary:active,
+.btn-primary.active,
+.btn-primary.disabled,
+.btn-primary[disabled] {
+  color: #ffffff;
+  background-color: #0044cc;
+  *background-color: #003bb3;
+}
+.btn-primary:active,
+.btn-primary.active {
+  background-color: #003399 \9;
+}
+.btn-warning {
+  color: #ffffff;
+  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
+  background-color: #faa732;
+  background-image: -moz-linear-gradient(top, #fbb450, #f89406);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#fbb450), to(#f89406));
+  background-image: -webkit-linear-gradient(top, #fbb450, #f89406);
+  background-image: -o-linear-gradient(top, #fbb450, #f89406);
+  background-image: linear-gradient(to bottom, #fbb450, #f89406);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fffbb450', endColorstr='#fff89406', GradientType=0);
+  border-color: #f89406 #f89406 #ad6704;
+  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
+  *background-color: #f89406;
+  /* Darken IE7 buttons by default so they stand out more given they won't have borders */
+
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+}
+.btn-warning:hover,
+.btn-warning:active,
+.btn-warning.active,
+.btn-warning.disabled,
+.btn-warning[disabled] {
+  color: #ffffff;
+  background-color: #f89406;
+  *background-color: #df8505;
+}
+.btn-warning:active,
+.btn-warning.active {
+  background-color: #c67605 \9;
+}
+.btn-danger {
+  color: #ffffff;
+  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
+  background-color: #da4f49;
+  background-image: -moz-linear-gradient(top, #ee5f5b, #bd362f);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ee5f5b), to(#bd362f));
+  background-image: -webkit-linear-gradient(top, #ee5f5b, #bd362f);
+  background-image: -o-linear-gradient(top, #ee5f5b, #bd362f);
+  background-image: linear-gradient(to bottom, #ee5f5b, #bd362f);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffee5f5b', endColorstr='#ffbd362f', GradientType=0);
+  border-color: #bd362f #bd362f #802420;
+  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
+  *background-color: #bd362f;
+  /* Darken IE7 buttons by default so they stand out more given they won't have borders */
+
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+}
+.btn-danger:hover,
+.btn-danger:active,
+.btn-danger.active,
+.btn-danger.disabled,
+.btn-danger[disabled] {
+  color: #ffffff;
+  background-color: #bd362f;
+  *background-color: #a9302a;
+}
+.btn-danger:active,
+.btn-danger.active {
+  background-color: #942a25 \9;
+}
+.btn-success {
+  color: #ffffff;
+  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
+  background-color: #5bb75b;
+  background-image: -moz-linear-gradient(top, #62c462, #51a351);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#62c462), to(#51a351));
+  background-image: -webkit-linear-gradient(top, #62c462, #51a351);
+  background-image: -o-linear-gradient(top, #62c462, #51a351);
+  background-image: linear-gradient(to bottom, #62c462, #51a351);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff62c462', endColorstr='#ff51a351', GradientType=0);
+  border-color: #51a351 #51a351 #387038;
+  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
+  *background-color: #51a351;
+  /* Darken IE7 buttons by default so they stand out more given they won't have borders */
+
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+}
+.btn-success:hover,
+.btn-success:active,
+.btn-success.active,
+.btn-success.disabled,
+.btn-success[disabled] {
+  color: #ffffff;
+  background-color: #51a351;
+  *background-color: #499249;
+}
+.btn-success:active,
+.btn-success.active {
+  background-color: #408140 \9;
+}
+.btn-info {
+  color: #ffffff;
+  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
+  background-color: #49afcd;
+  background-image: -moz-linear-gradient(top, #5bc0de, #2f96b4);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#5bc0de), to(#2f96b4));
+  background-image: -webkit-linear-gradient(top, #5bc0de, #2f96b4);
+  background-image: -o-linear-gradient(top, #5bc0de, #2f96b4);
+  background-image: linear-gradient(to bottom, #5bc0de, #2f96b4);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff5bc0de', endColorstr='#ff2f96b4', GradientType=0);
+  border-color: #2f96b4 #2f96b4 #1f6377;
+  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
+  *background-color: #2f96b4;
+  /* Darken IE7 buttons by default so they stand out more given they won't have borders */
+
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+}
+.btn-info:hover,
+.btn-info:active,
+.btn-info.active,
+.btn-info.disabled,
+.btn-info[disabled] {
+  color: #ffffff;
+  background-color: #2f96b4;
+  *background-color: #2a85a0;
+}
+.btn-info:active,
+.btn-info.active {
+  background-color: #24748c \9;
+}
+.btn-inverse {
+  color: #ffffff;
+  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
+  background-color: #363636;
+  background-image: -moz-linear-gradient(top, #444444, #222222);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#444444), to(#222222));
+  background-image: -webkit-linear-gradient(top, #444444, #222222);
+  background-image: -o-linear-gradient(top, #444444, #222222);
+  background-image: linear-gradient(to bottom, #444444, #222222);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff444444', endColorstr='#ff222222', GradientType=0);
+  border-color: #222222 #222222 #000000;
+  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
+  *background-color: #222222;
+  /* Darken IE7 buttons by default so they stand out more given they won't have borders */
+
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+}
+.btn-inverse:hover,
+.btn-inverse:active,
+.btn-inverse.active,
+.btn-inverse.disabled,
+.btn-inverse[disabled] {
+  color: #ffffff;
+  background-color: #222222;
+  *background-color: #151515;
+}
+.btn-inverse:active,
+.btn-inverse.active {
+  background-color: #080808 \9;
+}
+button.btn,
+input[type="submit"].btn {
+  *padding-top: 3px;
+  *padding-bottom: 3px;
+}
+button.btn::-moz-focus-inner,
+input[type="submit"].btn::-moz-focus-inner {
+  padding: 0;
+  border: 0;
+}
+button.btn.btn-large,
+input[type="submit"].btn.btn-large {
+  *padding-top: 7px;
+  *padding-bottom: 7px;
+}
+button.btn.btn-small,
+input[type="submit"].btn.btn-small {
+  *padding-top: 3px;
+  *padding-bottom: 3px;
+}
+button.btn.btn-mini,
+input[type="submit"].btn.btn-mini {
+  *padding-top: 1px;
+  *padding-bottom: 1px;
+}
+.btn-link,
+.btn-link:active,
+.btn-link[disabled] {
+  background-color: transparent;
+  background-image: none;
+  -webkit-box-shadow: none;
+  -moz-box-shadow: none;
+  box-shadow: none;
+}
+.btn-link {
+  border-color: transparent;
+  cursor: pointer;
+  color: #0088cc;
+  -webkit-border-radius: 0;
+  -moz-border-radius: 0;
+  border-radius: 0;
+}
+.btn-link:hover {
+  color: #005580;
+  text-decoration: underline;
+  background-color: transparent;
+}
+.btn-link[disabled]:hover {
+  color: #333333;
+  text-decoration: none;
+}
+.btn-group {
+  position: relative;
+  display: inline-block;
+  *display: inline;
+  /* IE7 inline-block hack */
+
+  *zoom: 1;
+  font-size: 0;
+  vertical-align: middle;
+  white-space: nowrap;
+  *margin-left: .3em;
+}
+.btn-group:first-child {
+  *margin-left: 0;
+}
+.btn-group + .btn-group {
+  margin-left: 5px;
+}
+.btn-toolbar {
+  font-size: 0;
+  margin-top: 10px;
+  margin-bottom: 10px;
+}
+.btn-toolbar > .btn + .btn,
+.btn-toolbar > .btn-group + .btn,
+.btn-toolbar > .btn + .btn-group {
+  margin-left: 5px;
+}
+.btn-group > .btn {
+  position: relative;
+  -webkit-border-radius: 0;
+  -moz-border-radius: 0;
+  border-radius: 0;
+}
+.btn-group > .btn + .btn {
+  margin-left: -1px;
+}
+.btn-group > .btn,
+.btn-group > .dropdown-menu,
+.btn-group > .popover {
+  font-size: 14px;
+}
+.btn-group > .btn-mini {
+  font-size: 10.5px;
+}
+.btn-group > .btn-small {
+  font-size: 11.9px;
+}
+.btn-group > .btn-large {
+  font-size: 17.5px;
+}
+.btn-group > .btn:first-child {
+  margin-left: 0;
+  -webkit-border-top-left-radius: 4px;
+  -moz-border-radius-topleft: 4px;
+  border-top-left-radius: 4px;
+  -webkit-border-bottom-left-radius: 4px;
+  -moz-border-radius-bottomleft: 4px;
+  border-bottom-left-radius: 4px;
+}
+.btn-group > .btn:last-child,
+.btn-group > .dropdown-toggle {
+  -webkit-border-top-right-radius: 4px;
+  -moz-border-radius-topright: 4px;
+  border-top-right-radius: 4px;
+  -webkit-border-bottom-right-radius: 4px;
+  -moz-border-radius-bottomright: 4px;
+  border-bottom-right-radius: 4px;
+}
+.btn-group > .btn.large:first-child {
+  margin-left: 0;
+  -webkit-border-top-left-radius: 6px;
+  -moz-border-radius-topleft: 6px;
+  border-top-left-radius: 6px;
+  -webkit-border-bottom-left-radius: 6px;
+  -moz-border-radius-bottomleft: 6px;
+  border-bottom-left-radius: 6px;
+}
+.btn-group > .btn.large:last-child,
+.btn-group > .large.dropdown-toggle {
+  -webkit-border-top-right-radius: 6px;
+  -moz-border-radius-topright: 6px;
+  border-top-right-radius: 6px;
+  -webkit-border-bottom-right-radius: 6px;
+  -moz-border-radius-bottomright: 6px;
+  border-bottom-right-radius: 6px;
+}
+.btn-group > .btn:hover,
+.btn-group > .btn:focus,
+.btn-group > .btn:active,
+.btn-group > .btn.active {
+  z-index: 2;
+}
+.btn-group .dropdown-toggle:active,
+.btn-group.open .dropdown-toggle {
+  outline: 0;
+}
+.btn-group > .btn + .dropdown-toggle {
+  padding-left: 8px;
+  padding-right: 8px;
+  -webkit-box-shadow: inset 1px 0 0 rgba(255,255,255,.125), inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05);
+  -moz-box-shadow: inset 1px 0 0 rgba(255,255,255,.125), inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05);
+  box-shadow: inset 1px 0 0 rgba(255,255,255,.125), inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05);
+  *padding-top: 5px;
+  *padding-bottom: 5px;
+}
+.btn-group > .btn-mini + .dropdown-toggle {
+  padding-left: 5px;
+  padding-right: 5px;
+  *padding-top: 2px;
+  *padding-bottom: 2px;
+}
+.btn-group > .btn-small + .dropdown-toggle {
+  *padding-top: 5px;
+  *padding-bottom: 4px;
+}
+.btn-group > .btn-large + .dropdown-toggle {
+  padding-left: 12px;
+  padding-right: 12px;
+  *padding-top: 7px;
+  *padding-bottom: 7px;
+}
+.btn-group.open .dropdown-toggle {
+  background-image: none;
+  -webkit-box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05);
+  -moz-box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05);
+  box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05);
+}
+.btn-group.open .btn.dropdown-toggle {
+  background-color: #e6e6e6;
+}
+.btn-group.open .btn-primary.dropdown-toggle {
+  background-color: #0044cc;
+}
+.btn-group.open .btn-warning.dropdown-toggle {
+  background-color: #f89406;
+}
+.btn-group.open .btn-danger.dropdown-toggle {
+  background-color: #bd362f;
+}
+.btn-group.open .btn-success.dropdown-toggle {
+  background-color: #51a351;
+}
+.btn-group.open .btn-info.dropdown-toggle {
+  background-color: #2f96b4;
+}
+.btn-group.open .btn-inverse.dropdown-toggle {
+  background-color: #222222;
+}
+.btn .caret {
+  margin-top: 8px;
+  margin-left: 0;
+}
+.btn-mini .caret,
+.btn-small .caret,
+.btn-large .caret {
+  margin-top: 6px;
+}
+.btn-large .caret {
+  border-left-width: 5px;
+  border-right-width: 5px;
+  border-top-width: 5px;
+}
+.dropup .btn-large .caret {
+  border-bottom-width: 5px;
+}
+.btn-primary .caret,
+.btn-warning .caret,
+.btn-danger .caret,
+.btn-info .caret,
+.btn-success .caret,
+.btn-inverse .caret {
+  border-top-color: #ffffff;
+  border-bottom-color: #ffffff;
+}
+.btn-group-vertical {
+  display: inline-block;
+  *display: inline;
+  /* IE7 inline-block hack */
+
+  *zoom: 1;
+}
+.btn-group-vertical > .btn {
+  display: block;
+  float: none;
+  max-width: 100%;
+  -webkit-border-radius: 0;
+  -moz-border-radius: 0;
+  border-radius: 0;
+}
+.btn-group-vertical > .btn + .btn {
+  margin-left: 0;
+  margin-top: -1px;
+}
+.btn-group-vertical > .btn:first-child {
+  -webkit-border-radius: 4px 4px 0 0;
+  -moz-border-radius: 4px 4px 0 0;
+  border-radius: 4px 4px 0 0;
+}
+.btn-group-vertical > .btn:last-child {
+  -webkit-border-radius: 0 0 4px 4px;
+  -moz-border-radius: 0 0 4px 4px;
+  border-radius: 0 0 4px 4px;
+}
+.btn-group-vertical > .btn-large:first-child {
+  -webkit-border-radius: 6px 6px 0 0;
+  -moz-border-radius: 6px 6px 0 0;
+  border-radius: 6px 6px 0 0;
+}
+.btn-group-vertical > .btn-large:last-child {
+  -webkit-border-radius: 0 0 6px 6px;
+  -moz-border-radius: 0 0 6px 6px;
+  border-radius: 0 0 6px 6px;
+}
+@-webkit-keyframes progress-bar-stripes {
+  from {
+    background-position: 40px 0;
+  }
+  to {
+    background-position: 0 0;
+  }
+}
+@-moz-keyframes progress-bar-stripes {
+  from {
+    background-position: 40px 0;
+  }
+  to {
+    background-position: 0 0;
+  }
+}
+@-ms-keyframes progress-bar-stripes {
+  from {
+    background-position: 40px 0;
+  }
+  to {
+    background-position: 0 0;
+  }
+}
+@-o-keyframes progress-bar-stripes {
+  from {
+    background-position: 0 0;
+  }
+  to {
+    background-position: 40px 0;
+  }
+}
+@keyframes progress-bar-stripes {
+  from {
+    background-position: 40px 0;
+  }
+  to {
+    background-position: 0 0;
+  }
+}
+.progress {
+  overflow: hidden;
+  height: 20px;
+  margin-bottom: 20px;
+  background-color: #f7f7f7;
+  background-image: -moz-linear-gradient(top, #f5f5f5, #f9f9f9);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#f5f5f5), to(#f9f9f9));
+  background-image: -webkit-linear-gradient(top, #f5f5f5, #f9f9f9);
+  background-image: -o-linear-gradient(top, #f5f5f5, #f9f9f9);
+  background-image: linear-gradient(to bottom, #f5f5f5, #f9f9f9);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff5f5f5', endColorstr='#fff9f9f9', GradientType=0);
+  -webkit-box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
+  -moz-box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
+  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
+  -webkit-border-radius: 4px;
+  -moz-border-radius: 4px;
+  border-radius: 4px;
+}
+.progress .bar {
+  width: 0%;
+  height: 100%;
+  color: #ffffff;
+  float: left;
+  font-size: 12px;
+  text-align: center;
+  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
+  background-color: #0e90d2;
+  background-image: -moz-linear-gradient(top, #149bdf, #0480be);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#149bdf), to(#0480be));
+  background-image: -webkit-linear-gradient(top, #149bdf, #0480be);
+  background-image: -o-linear-gradient(top, #149bdf, #0480be);
+  background-image: linear-gradient(to bottom, #149bdf, #0480be);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff149bdf', endColorstr='#ff0480be', GradientType=0);
+  -webkit-box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.15);
+  -moz-box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.15);
+  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.15);
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+  -webkit-transition: width 0.6s ease;
+  -moz-transition: width 0.6s ease;
+  -o-transition: width 0.6s ease;
+  transition: width 0.6s ease;
+}
+.progress .bar + .bar {
+  -webkit-box-shadow: inset 1px 0 0 rgba(0,0,0,.15), inset 0 -1px 0 rgba(0,0,0,.15);
+  -moz-box-shadow: inset 1px 0 0 rgba(0,0,0,.15), inset 0 -1px 0 rgba(0,0,0,.15);
+  box-shadow: inset 1px 0 0 rgba(0,0,0,.15), inset 0 -1px 0 rgba(0,0,0,.15);
+}
+.progress-striped .bar {
+  background-color: #149bdf;
+  background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(0.25, rgba(255, 255, 255, 0.15)), color-stop(0.25, transparent), color-stop(0.5, transparent), color-stop(0.5, rgba(255, 255, 255, 0.15)), color-stop(0.75, rgba(255, 255, 255, 0.15)), color-stop(0.75, transparent), to(transparent));
+  background-image: -webkit-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: -moz-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: -o-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  -webkit-background-size: 40px 40px;
+  -moz-background-size: 40px 40px;
+  -o-background-size: 40px 40px;
+  background-size: 40px 40px;
+}
+.progress.active .bar {
+  -webkit-animation: progress-bar-stripes 2s linear infinite;
+  -moz-animation: progress-bar-stripes 2s linear infinite;
+  -ms-animation: progress-bar-stripes 2s linear infinite;
+  -o-animation: progress-bar-stripes 2s linear infinite;
+  animation: progress-bar-stripes 2s linear infinite;
+}
+.progress-danger .bar,
+.progress .bar-danger {
+  background-color: #dd514c;
+  background-image: -moz-linear-gradient(top, #ee5f5b, #c43c35);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ee5f5b), to(#c43c35));
+  background-image: -webkit-linear-gradient(top, #ee5f5b, #c43c35);
+  background-image: -o-linear-gradient(top, #ee5f5b, #c43c35);
+  background-image: linear-gradient(to bottom, #ee5f5b, #c43c35);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffee5f5b', endColorstr='#ffc43c35', GradientType=0);
+}
+.progress-danger.progress-striped .bar,
+.progress-striped .bar-danger {
+  background-color: #ee5f5b;
+  background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(0.25, rgba(255, 255, 255, 0.15)), color-stop(0.25, transparent), color-stop(0.5, transparent), color-stop(0.5, rgba(255, 255, 255, 0.15)), color-stop(0.75, rgba(255, 255, 255, 0.15)), color-stop(0.75, transparent), to(transparent));
+  background-image: -webkit-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: -moz-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: -o-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+}
+.progress-success .bar,
+.progress .bar-success {
+  background-color: #5eb95e;
+  background-image: -moz-linear-gradient(top, #62c462, #57a957);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#62c462), to(#57a957));
+  background-image: -webkit-linear-gradient(top, #62c462, #57a957);
+  background-image: -o-linear-gradient(top, #62c462, #57a957);
+  background-image: linear-gradient(to bottom, #62c462, #57a957);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff62c462', endColorstr='#ff57a957', GradientType=0);
+}
+.progress-success.progress-striped .bar,
+.progress-striped .bar-success {
+  background-color: #62c462;
+  background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(0.25, rgba(255, 255, 255, 0.15)), color-stop(0.25, transparent), color-stop(0.5, transparent), color-stop(0.5, rgba(255, 255, 255, 0.15)), color-stop(0.75, rgba(255, 255, 255, 0.15)), color-stop(0.75, transparent), to(transparent));
+  background-image: -webkit-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: -moz-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: -o-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+}
+.progress-info .bar,
+.progress .bar-info {
+  background-color: #4bb1cf;
+  background-image: -moz-linear-gradient(top, #5bc0de, #339bb9);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#5bc0de), to(#339bb9));
+  background-image: -webkit-linear-gradient(top, #5bc0de, #339bb9);
+  background-image: -o-linear-gradient(top, #5bc0de, #339bb9);
+  background-image: linear-gradient(to bottom, #5bc0de, #339bb9);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff5bc0de', endColorstr='#ff339bb9', GradientType=0);
+}
+.progress-info.progress-striped .bar,
+.progress-striped .bar-info {
+  background-color: #5bc0de;
+  background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(0.25, rgba(255, 255, 255, 0.15)), color-stop(0.25, transparent), color-stop(0.5, transparent), color-stop(0.5, rgba(255, 255, 255, 0.15)), color-stop(0.75, rgba(255, 255, 255, 0.15)), color-stop(0.75, transparent), to(transparent));
+  background-image: -webkit-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: -moz-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: -o-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+}
+.progress-warning .bar,
+.progress .bar-warning {
+  background-color: #faa732;
+  background-image: -moz-linear-gradient(top, #fbb450, #f89406);
+  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#fbb450), to(#f89406));
+  background-image: -webkit-linear-gradient(top, #fbb450, #f89406);
+  background-image: -o-linear-gradient(top, #fbb450, #f89406);
+  background-image: linear-gradient(to bottom, #fbb450, #f89406);
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fffbb450', endColorstr='#fff89406', GradientType=0);
+}
+.progress-warning.progress-striped .bar,
+.progress-striped .bar-warning {
+  background-color: #fbb450;
+  background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(0.25, rgba(255, 255, 255, 0.15)), color-stop(0.25, transparent), color-stop(0.5, transparent), color-stop(0.5, rgba(255, 255, 255, 0.15)), color-stop(0.75, rgba(255, 255, 255, 0.15)), color-stop(0.75, transparent), to(transparent));
+  background-image: -webkit-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: -moz-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: -o-linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+  background-image: linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
+}
diff --git a/frontend/css/font-awesome.css b/frontend/css/font-awesome.css
new file mode 100644
index 0000000..549728b
--- /dev/null
+++ b/frontend/css/font-awesome.css
@@ -0,0 +1,469 @@
+/*  Font Awesome 3.0
+    the iconic font designed for use with Twitter Bootstrap
+    -------------------------------------------------------
+    The full suite of pictographic icons, examples, and documentation
+    can be found at: http://fortawesome.github.com/Font-Awesome/
+
+    License
+    -------------------------------------------------------
+    • The Font Awesome font is licensed under the SIL Open Font License - http://scripts.sil.org/OFL
+    • Font Awesome CSS, LESS, and SASS files are licensed under the MIT License -
+      http://opensource.org/licenses/mit-license.html
+    • The Font Awesome pictograms are licensed under the CC BY 3.0 License - http://creativecommons.org/licenses/by/3.0/
+    • Attribution is no longer required in Font Awesome 3.0, but much appreciated:
+      "Font Awesome by Dave Gandy - http://fortawesome.github.com/Font-Awesome"
+
+    Contact
+    -------------------------------------------------------
+    Email: dave@davegandy.com
+    Twitter: http://twitter.com/fortaweso_me
+    Work: Lead Product Designer @ http://kyruus.com
+
+    */
+@font-face {
+  font-family: 'FontAwesome';
+  src: url('../font/fontawesome-webfont.eot');
+  src: url('../font/fontawesome-webfont.eot?#iefix') format('embedded-opentype'),
+    url('../font/fontawesome-webfont.woff') format('woff'),
+    url('../font/fontawesome-webfont.ttf') format('truetype');
+  font-weight: normal;
+  font-style: normal;
+}
+/*  Font Awesome styles
+    ------------------------------------------------------- */
+/* includes sprites.less reset */
+[class^="icon-"],
+[class*=" icon-"] {
+  font-family: FontAwesome;
+  font-weight: normal;
+  font-style: normal;
+  text-decoration: inherit;
+  display: inline;
+  width: auto;
+  height: auto;
+  line-height: normal;
+  vertical-align: baseline;
+  background-image: none !important;
+  background-position: 0% 0%;
+  background-repeat: repeat;
+}
+[class^="icon-"]:before,
+[class*=" icon-"]:before {
+  text-decoration: inherit;
+  display: inline-block;
+  speak: none;
+}
+/* makes sure icons active on rollover in links */
+a [class^="icon-"],
+a [class*=" icon-"] {
+  display: inline-block;
+}
+/* makes the font 33% larger relative to the icon container */
+.icon-large:before {
+  vertical-align: -10%;
+  font-size: 1.3333333333333333em;
+}
+.btn [class^="icon-"],
+.nav [class^="icon-"],
+.btn [class*=" icon-"],
+.nav [class*=" icon-"] {
+  display: inline;
+  /* keeps button heights with and without icons the same */
+
+  line-height: .6em;
+}
+.btn [class^="icon-"].icon-spin,
+.nav [class^="icon-"].icon-spin,
+.btn [class*=" icon-"].icon-spin,
+.nav [class*=" icon-"].icon-spin {
+  display: inline-block;
+}
+li [class^="icon-"],
+li [class*=" icon-"] {
+  display: inline-block;
+  width: 1.25em;
+  text-align: center;
+}
+li [class^="icon-"].icon-large,
+li [class*=" icon-"].icon-large {
+  /* increased font size for icon-large */
+
+  width: 1.5625em;
+}
+ul.icons {
+  list-style-type: none;
+  text-indent: -0.75em;
+}
+ul.icons li [class^="icon-"],
+ul.icons li [class*=" icon-"] {
+  width: .75em;
+}
+.icon-muted {
+  color: #eeeeee;
+}
+.icon-border {
+  border: solid 1px #eeeeee;
+  padding: .2em .25em .15em;
+  -webkit-border-radius: 3px;
+  -moz-border-radius: 3px;
+  border-radius: 3px;
+}
+.icon-2x {
+  font-size: 2em;
+}
+.icon-2x.icon-border {
+  border-width: 2px;
+  -webkit-border-radius: 4px;
+  -moz-border-radius: 4px;
+  border-radius: 4px;
+}
+.icon-3x {
+  font-size: 3em;
+}
+.icon-3x.icon-border {
+  border-width: 3px;
+  -webkit-border-radius: 5px;
+  -moz-border-radius: 5px;
+  border-radius: 5px;
+}
+.icon-4x {
+  font-size: 4em;
+}
+.icon-4x.icon-border {
+  border-width: 4px;
+  -webkit-border-radius: 6px;
+  -moz-border-radius: 6px;
+  border-radius: 6px;
+}
+.pull-right {
+  float: right;
+}
+.pull-left {
+  float: left;
+}
+[class^="icon-"].pull-left,
+[class*=" icon-"].pull-left {
+  margin-right: .35em;
+}
+[class^="icon-"].pull-right,
+[class*=" icon-"].pull-right {
+  margin-left: .35em;
+}
+.btn [class^="icon-"].pull-left.icon-2x,
+.btn [class*=" icon-"].pull-left.icon-2x,
+.btn [class^="icon-"].pull-right.icon-2x,
+.btn [class*=" icon-"].pull-right.icon-2x {
+  margin-top: .35em;
+}
+.btn [class^="icon-"].icon-spin.icon-large,
+.btn [class*=" icon-"].icon-spin.icon-large {
+  height: .75em;
+}
+.btn.btn-small [class^="icon-"].pull-left.icon-2x,
+.btn.btn-small [class*=" icon-"].pull-left.icon-2x,
+.btn.btn-small [class^="icon-"].pull-right.icon-2x,
+.btn.btn-small [class*=" icon-"].pull-right.icon-2x {
+  margin-top: .45em;
+}
+.btn.btn-large [class^="icon-"].pull-left.icon-2x,
+.btn.btn-large [class*=" icon-"].pull-left.icon-2x,
+.btn.btn-large [class^="icon-"].pull-right.icon-2x,
+.btn.btn-large [class*=" icon-"].pull-right.icon-2x {
+  margin-top: .2em;
+}
+.icon-spin {
+  display: inline-block;
+  -moz-animation: spin 2s infinite linear;
+  -o-animation: spin 2s infinite linear;
+  -webkit-animation: spin 2s infinite linear;
+  animation: spin 2s infinite linear;
+}
+@-moz-keyframes spin {
+  0% { -moz-transform: rotate(0deg); }
+  100% { -moz-transform: rotate(359deg); }
+}
+@-webkit-keyframes spin {
+  0% { -webkit-transform: rotate(0deg); }
+  100% { -webkit-transform: rotate(359deg); }
+}
+@-o-keyframes spin {
+  0% { -o-transform: rotate(0deg); }
+  100% { -o-transform: rotate(359deg); }
+}
+@-ms-keyframes spin {
+  0% { -ms-transform: rotate(0deg); }
+  100% { -ms-transform: rotate(359deg); }
+}
+@keyframes spin {
+  0% { transform: rotate(0deg); }
+  100% { transform: rotate(359deg); }
+}
+/*  Font Awesome uses the Unicode Private Use Area (PUA) to ensure screen
+    readers do not read off random characters that represent icons */
+.icon-glass:before                { content: "\f000"; }
+.icon-music:before                { content: "\f001"; }
+.icon-search:before               { content: "\f002"; }
+.icon-envelope:before             { content: "\f003"; }
+.icon-heart:before                { content: "\f004"; }
+.icon-star:before                 { content: "\f005"; }
+.icon-star-empty:before           { content: "\f006"; }
+.icon-user:before                 { content: "\f007"; }
+.icon-film:before                 { content: "\f008"; }
+.icon-th-large:before             { content: "\f009"; }
+.icon-th:before                   { content: "\f00a"; }
+.icon-th-list:before              { content: "\f00b"; }
+.icon-ok:before                   { content: "\f00c"; }
+.icon-remove:before               { content: "\f00d"; }
+.icon-zoom-in:before              { content: "\f00e"; }
+
+.icon-zoom-out:before             { content: "\f010"; }
+.icon-off:before                  { content: "\f011"; }
+.icon-signal:before               { content: "\f012"; }
+.icon-cog:before                  { content: "\f013"; }
+.icon-trash:before                { content: "\f014"; }
+.icon-home:before                 { content: "\f015"; }
+.icon-file:before                 { content: "\f016"; }
+.icon-time:before                 { content: "\f017"; }
+.icon-road:before                 { content: "\f018"; }
+.icon-download-alt:before         { content: "\f019"; }
+.icon-download:before             { content: "\f01a"; }
+.icon-upload:before               { content: "\f01b"; }
+.icon-inbox:before                { content: "\f01c"; }
+.icon-play-circle:before          { content: "\f01d"; }
+.icon-repeat:before               { content: "\f01e"; }
+
+/* \f020 doesn't work in Safari. all shifted one down */
+.icon-refresh:before              { content: "\f021"; }
+.icon-list-alt:before             { content: "\f022"; }
+.icon-lock:before                 { content: "\f023"; }
+.icon-flag:before                 { content: "\f024"; }
+.icon-headphones:before           { content: "\f025"; }
+.icon-volume-off:before           { content: "\f026"; }
+.icon-volume-down:before          { content: "\f027"; }
+.icon-volume-up:before            { content: "\f028"; }
+.icon-qrcode:before               { content: "\f029"; }
+.icon-barcode:before              { content: "\f02a"; }
+.icon-tag:before                  { content: "\f02b"; }
+.icon-tags:before                 { content: "\f02c"; }
+.icon-book:before                 { content: "\f02d"; }
+.icon-bookmark:before             { content: "\f02e"; }
+.icon-print:before                { content: "\f02f"; }
+
+.icon-camera:before               { content: "\f030"; }
+.icon-font:before                 { content: "\f031"; }
+.icon-bold:before                 { content: "\f032"; }
+.icon-italic:before               { content: "\f033"; }
+.icon-text-height:before          { content: "\f034"; }
+.icon-text-width:before           { content: "\f035"; }
+.icon-align-left:before           { content: "\f036"; }
+.icon-align-center:before         { content: "\f037"; }
+.icon-align-right:before          { content: "\f038"; }
+.icon-align-justify:before        { content: "\f039"; }
+.icon-list:before                 { content: "\f03a"; }
+.icon-indent-left:before          { content: "\f03b"; }
+.icon-indent-right:before         { content: "\f03c"; }
+.icon-facetime-video:before       { content: "\f03d"; }
+.icon-picture:before              { content: "\f03e"; }
+
+.icon-pencil:before               { content: "\f040"; }
+.icon-map-marker:before           { content: "\f041"; }
+.icon-adjust:before               { content: "\f042"; }
+.icon-tint:before                 { content: "\f043"; }
+.icon-edit:before                 { content: "\f044"; }
+.icon-share:before                { content: "\f045"; }
+.icon-check:before                { content: "\f046"; }
+.icon-move:before                 { content: "\f047"; }
+.icon-step-backward:before        { content: "\f048"; }
+.icon-fast-backward:before        { content: "\f049"; }
+.icon-backward:before             { content: "\f04a"; }
+.icon-play:before                 { content: "\f04b"; }
+.icon-pause:before                { content: "\f04c"; }
+.icon-stop:before                 { content: "\f04d"; }
+.icon-forward:before              { content: "\f04e"; }
+
+.icon-fast-forward:before         { content: "\f050"; }
+.icon-step-forward:before         { content: "\f051"; }
+.icon-eject:before                { content: "\f052"; }
+.icon-chevron-left:before         { content: "\f053"; }
+.icon-chevron-right:before        { content: "\f054"; }
+.icon-plus-sign:before            { content: "\f055"; }
+.icon-minus-sign:before           { content: "\f056"; }
+.icon-remove-sign:before          { content: "\f057"; }
+.icon-ok-sign:before              { content: "\f058"; }
+.icon-question-sign:before        { content: "\f059"; }
+.icon-info-sign:before            { content: "\f05a"; }
+.icon-screenshot:before           { content: "\f05b"; }
+.icon-remove-circle:before        { content: "\f05c"; }
+.icon-ok-circle:before            { content: "\f05d"; }
+.icon-ban-circle:before           { content: "\f05e"; }
+
+.icon-arrow-left:before           { content: "\f060"; }
+.icon-arrow-right:before          { content: "\f061"; }
+.icon-arrow-up:before             { content: "\f062"; }
+.icon-arrow-down:before           { content: "\f063"; }
+.icon-share-alt:before            { content: "\f064"; }
+.icon-resize-full:before          { content: "\f065"; }
+.icon-resize-small:before         { content: "\f066"; }
+.icon-plus:before                 { content: "\f067"; }
+.icon-minus:before                { content: "\f068"; }
+.icon-asterisk:before             { content: "\f069"; }
+.icon-exclamation-sign:before     { content: "\f06a"; }
+.icon-gift:before                 { content: "\f06b"; }
+.icon-leaf:before                 { content: "\f06c"; }
+.icon-fire:before                 { content: "\f06d"; }
+.icon-eye-open:before             { content: "\f06e"; }
+
+.icon-eye-close:before            { content: "\f070"; }
+.icon-warning-sign:before         { content: "\f071"; }
+.icon-plane:before                { content: "\f072"; }
+.icon-calendar:before             { content: "\f073"; }
+.icon-random:before               { content: "\f074"; }
+.icon-comment:before              { content: "\f075"; }
+.icon-magnet:before               { content: "\f076"; }
+.icon-chevron-up:before           { content: "\f077"; }
+.icon-chevron-down:before         { content: "\f078"; }
+.icon-retweet:before              { content: "\f079"; }
+.icon-shopping-cart:before        { content: "\f07a"; }
+.icon-folder-close:before         { content: "\f07b"; }
+.icon-folder-open:before          { content: "\f07c"; }
+.icon-resize-vertical:before      { content: "\f07d"; }
+.icon-resize-horizontal:before    { content: "\f07e"; }
+
+.icon-bar-chart:before            { content: "\f080"; }
+.icon-twitter-sign:before         { content: "\f081"; }
+.icon-facebook-sign:before        { content: "\f082"; }
+.icon-camera-retro:before         { content: "\f083"; }
+.icon-key:before                  { content: "\f084"; }
+.icon-cogs:before                 { content: "\f085"; }
+.icon-comments:before             { content: "\f086"; }
+.icon-thumbs-up:before            { content: "\f087"; }
+.icon-thumbs-down:before          { content: "\f088"; }
+.icon-star-half:before            { content: "\f089"; }
+.icon-heart-empty:before          { content: "\f08a"; }
+.icon-signout:before              { content: "\f08b"; }
+.icon-linkedin-sign:before        { content: "\f08c"; }
+.icon-pushpin:before              { content: "\f08d"; }
+.icon-external-link:before        { content: "\f08e"; }
+
+.icon-signin:before               { content: "\f090"; }
+.icon-trophy:before               { content: "\f091"; }
+.icon-github-sign:before          { content: "\f092"; }
+.icon-upload-alt:before           { content: "\f093"; }
+.icon-lemon:before                { content: "\f094"; }
+.icon-phone:before                { content: "\f095"; }
+.icon-check-empty:before          { content: "\f096"; }
+.icon-bookmark-empty:before       { content: "\f097"; }
+.icon-phone-sign:before           { content: "\f098"; }
+.icon-twitter:before              { content: "\f099"; }
+.icon-facebook:before             { content: "\f09a"; }
+.icon-github:before               { content: "\f09b"; }
+.icon-unlock:before               { content: "\f09c"; }
+.icon-credit-card:before          { content: "\f09d"; }
+.icon-rss:before                  { content: "\f09e"; }
+
+.icon-hdd:before                  { content: "\f0a0"; }
+.icon-bullhorn:before             { content: "\f0a1"; }
+.icon-bell:before                 { content: "\f0a2"; }
+.icon-certificate:before          { content: "\f0a3"; }
+.icon-hand-right:before           { content: "\f0a4"; }
+.icon-hand-left:before            { content: "\f0a5"; }
+.icon-hand-up:before              { content: "\f0a6"; }
+.icon-hand-down:before            { content: "\f0a7"; }
+.icon-circle-arrow-left:before    { content: "\f0a8"; }
+.icon-circle-arrow-right:before   { content: "\f0a9"; }
+.icon-circle-arrow-up:before      { content: "\f0aa"; }
+.icon-circle-arrow-down:before    { content: "\f0ab"; }
+.icon-globe:before                { content: "\f0ac"; }
+.icon-wrench:before               { content: "\f0ad"; }
+.icon-tasks:before                { content: "\f0ae"; }
+
+.icon-filter:before               { content: "\f0b0"; }
+.icon-briefcase:before            { content: "\f0b1"; }
+.icon-fullscreen:before           { content: "\f0b2"; }
+
+.icon-group:before                { content: "\f0c0"; }
+.icon-link:before                 { content: "\f0c1"; }
+.icon-cloud:before                { content: "\f0c2"; }
+.icon-beaker:before               { content: "\f0c3"; }
+.icon-cut:before                  { content: "\f0c4"; }
+.icon-copy:before                 { content: "\f0c5"; }
+.icon-paper-clip:before           { content: "\f0c6"; }
+.icon-save:before                 { content: "\f0c7"; }
+.icon-sign-blank:before           { content: "\f0c8"; }
+.icon-reorder:before              { content: "\f0c9"; }
+.icon-list-ul:before              { content: "\f0ca"; }
+.icon-list-ol:before              { content: "\f0cb"; }
+.icon-strikethrough:before        { content: "\f0cc"; }
+.icon-underline:before            { content: "\f0cd"; }
+.icon-table:before                { content: "\f0ce"; }
+
+.icon-magic:before                { content: "\f0d0"; }
+.icon-truck:before                { content: "\f0d1"; }
+.icon-pinterest:before            { content: "\f0d2"; }
+.icon-pinterest-sign:before       { content: "\f0d3"; }
+.icon-google-plus-sign:before     { content: "\f0d4"; }
+.icon-google-plus:before          { content: "\f0d5"; }
+.icon-money:before                { content: "\f0d6"; }
+.icon-caret-down:before           { content: "\f0d7"; }
+.icon-caret-up:before             { content: "\f0d8"; }
+.icon-caret-left:before           { content: "\f0d9"; }
+.icon-caret-right:before          { content: "\f0da"; }
+.icon-columns:before              { content: "\f0db"; }
+.icon-sort:before                 { content: "\f0dc"; }
+.icon-sort-down:before            { content: "\f0dd"; }
+.icon-sort-up:before              { content: "\f0de"; }
+
+.icon-envelope-alt:before         { content: "\f0e0"; }
+.icon-linkedin:before             { content: "\f0e1"; }
+.icon-undo:before                 { content: "\f0e2"; }
+.icon-legal:before                { content: "\f0e3"; }
+.icon-dashboard:before            { content: "\f0e4"; }
+.icon-comment-alt:before          { content: "\f0e5"; }
+.icon-comments-alt:before         { content: "\f0e6"; }
+.icon-bolt:before                 { content: "\f0e7"; }
+.icon-sitemap:before              { content: "\f0e8"; }
+.icon-umbrella:before             { content: "\f0e9"; }
+.icon-paste:before                { content: "\f0ea"; }
+.icon-lightbulb:before            { content: "\f0eb"; }
+.icon-exchange:before             { content: "\f0ec"; }
+.icon-cloud-download:before       { content: "\f0ed"; }
+.icon-cloud-upload:before         { content: "\f0ee"; }
+
+.icon-user-md:before              { content: "\f0f0"; }
+.icon-stethoscope:before          { content: "\f0f1"; }
+.icon-suitcase:before             { content: "\f0f2"; }
+.icon-bell-alt:before             { content: "\f0f3"; }
+.icon-coffee:before               { content: "\f0f4"; }
+.icon-food:before                 { content: "\f0f5"; }
+.icon-file-alt:before             { content: "\f0f6"; }
+.icon-building:before             { content: "\f0f7"; }
+.icon-hospital:before             { content: "\f0f8"; }
+.icon-ambulance:before            { content: "\f0f9"; }
+.icon-medkit:before               { content: "\f0fa"; }
+.icon-fighter-jet:before          { content: "\f0fb"; }
+.icon-beer:before                 { content: "\f0fc"; }
+.icon-h-sign:before               { content: "\f0fd"; }
+.icon-plus-sign-alt:before        { content: "\f0fe"; }
+
+.icon-double-angle-left:before    { content: "\f100"; }
+.icon-double-angle-right:before   { content: "\f101"; }
+.icon-double-angle-up:before      { content: "\f102"; }
+.icon-double-angle-down:before    { content: "\f103"; }
+.icon-angle-left:before           { content: "\f104"; }
+.icon-angle-right:before          { content: "\f105"; }
+.icon-angle-up:before             { content: "\f106"; }
+.icon-angle-down:before           { content: "\f107"; }
+.icon-desktop:before              { content: "\f108"; }
+.icon-laptop:before               { content: "\f109"; }
+.icon-tablet:before               { content: "\f10a"; }
+.icon-mobile-phone:before         { content: "\f10b"; }
+.icon-circle-blank:before         { content: "\f10c"; }
+.icon-quote-left:before           { content: "\f10d"; }
+.icon-quote-right:before          { content: "\f10e"; }
+
+.icon-spinner:before              { content: "\f110"; }
+.icon-circle:before               { content: "\f111"; }
+.icon-reply:before                { content: "\f112"; }
+.icon-github-alt:before           { content: "\f113"; }
+.icon-folder-close-alt:before     { content: "\f114"; }
+.icon-folder-open-alt:before      { content: "\f115"; }
diff --git a/frontend/css/page.css b/frontend/css/page.css
new file mode 100644
index 0000000..02478e3
--- /dev/null
+++ b/frontend/css/page.css
@@ -0,0 +1,155 @@
+#search {
+	position: absolute;
+	top: 0;
+	width: 100%;
+	margin-top: 20px;
+}
+#songlist-container {
+	position: absolute;
+	top: 80px;
+	bottom: 120px;
+	width: 100%;
+	overflow: auto;
+	-webkit-overflow-scrolling: touch;
+}
+
+#controls {
+	position: absolute;
+	bottom: 60px;
+	width: 100%;
+	text-align: center;
+}
+#loading {
+	position: absolute;
+	top: 0;
+	right: 0;
+	left: 0;
+	bottom: 0;
+	background-color: #000000;
+	opacity: .70;
+	filter: alpha(opacity=70);
+	text-align: center;
+}
+#loading i {
+	position: relative;
+	font-size: 150px;
+	margin-top: 10%;
+}
+#login {
+	position: absolute;
+	top: 0;
+	right: 0;
+	left: 0;
+	bottom: 0;
+	background-color: #000000;
+	opacity: .90;
+	filter: alpha(opacity=90);
+	text-align: center;
+	display: none; 
+}
+#login form {
+	position: relative;
+	background-color: #dddddd;
+	padding: 50px;
+	border-radius: 5px;
+	-moz-border-radius: 5px;
+	-webkit-border-radius: 5px;
+	border: 1px solid #999999;
+	text-align: center;
+	display: inline-block;
+	margin-top: 10%;
+}
+#basket {
+	position: absolute;
+	bottom: 20px;
+	width: 100%;
+	text-align: center;
+}
+#basket-container {
+	background-color: #ffffff;
+	font-size: 0.85em;
+	width: 540px;
+	margin: 0 auto;
+	height: auto;
+	max-height: 0;
+	display: none;
+	overflow: auto;
+}
+#basket-container table {
+	margin-bottom: 0;
+	border-right: 1px solid #dddddd;
+	border-left: 1px solid #dddddd;
+	border-bottom: 1px solid #dddddd;
+}
+#basket-container td {
+	line-height: 0.85em;
+}
+.incorrect-login {
+	background-color: #f2dede !important;
+}
+.basket-shown #basket-container {
+	display: block;
+}
+.basket-shown .btn-group > .btn:first-child {
+	-webkit-border-bottom-left-radius: 0;
+	-moz-border-radius-bottomleft: 0;
+	border-bottom-left-radius: 0;
+}
+.basket-shown .btn-group > .btn:last-child {
+	-webkit-border-bottom-right-radius: 0;
+	-moz-border-radius-bottomright: 0;
+	border-bottom-right-radius: 0;
+}
+.basket-shown tr:first-child > td {
+	border-top: 0;
+}
+#basket .icon-caret-down {
+	display: none;
+}
+.now-playing {
+	font-weight: bold;
+	font-style: italic;
+}
+.input-thick {
+	text-align: center;
+}
+.input-thick .add-on {
+	height: 22pt;
+	font-size: 22pt;
+}
+.input-thick input {
+	width: 60%;
+	text-align: center;
+	font-size: 22pt;
+	font-weight: bold;
+	height: 22pt;
+}
+.btn-progress {
+	width: 395px;
+	display: inline-block;
+	height: 30px;
+	margin-bottom: -15px;
+	border-radius: 0;
+	-moz-border-radius: 0;
+	-webkit-border-radius: 0;
+	cursor: pointer;
+}
+.btn-progress .bar {
+	padding-top: 5px;
+}
+.remove {
+	opacity: 0.8;
+	filter: alpha(opacity=80);
+}
+.remove:hover {
+	opacity: 1;
+	filter: alpha(opacity=100);
+	cursor: pointer;
+	text-decoration: none;
+}
+.table-hover tbody tr:hover td, .table-hover tbody tr:hover th {
+	background-color: #d9edf7;
+}
+.selectable tr {
+	cursor: pointer;
+}
diff --git a/frontend/favicon.ico b/frontend/favicon.ico
new file mode 100644
index 0000000..a3a3a33
--- /dev/null
+++ b/frontend/favicon.ico
diff --git a/frontend/font/fontawesome-webfont.eot b/frontend/font/fontawesome-webfont.eot
new file mode 100644
index 0000000..11d2f41
--- /dev/null
+++ b/frontend/font/fontawesome-webfont.eot
diff --git a/frontend/font/fontawesome-webfont.ttf b/frontend/font/fontawesome-webfont.ttf
new file mode 100644
index 0000000..88ef262
--- /dev/null
+++ b/frontend/font/fontawesome-webfont.ttf
diff --git a/frontend/font/fontawesome-webfont.woff b/frontend/font/fontawesome-webfont.woff
new file mode 100644
index 0000000..7e892f8
--- /dev/null
+++ b/frontend/font/fontawesome-webfont.woff
diff --git a/frontend/index.html b/frontend/index.html
new file mode 100644
index 0000000..34370cb
--- /dev/null
+++ b/frontend/index.html
@@ -0,0 +1,76 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<!--[if lt IE 9 ]><meta http-equiv="refresh" content="0;URL='http://google.com/chrome'"><![endif]-->
+<title>ZX2C4 Music</title>
+<meta charset="UTF-8">
+<script src="js/scripts.min.js" type="application/javascript"></script>
+<link rel="stylesheet" type="text/css" href="css/styles.min.css">
+</head>
+<body>
+
+<div id="search" class="input-prepend input-thick">
+	<span class="add-on"><i id="search-progress" class="icon-search"></i></span>
+	<input type="text" id="query">
+</div>
+<div id="songlist-container">
+	<table class="table table-striped table-hover table-condensed">
+		<thead><tr><th>#</th><th>Title</th><th>Album</th><th>Artist</th><th></th></tr></thead>
+		<tbody class="selectable"></tbody>
+	</table>
+</div>
+<div id="controls">
+	<div class="current-track"></div>
+	<div class="btn-group">
+		<a class="btn play-pause" href="#"><i class="icon-play"></i></a>
+		<a class="btn stop" href="#"><i class="icon-stop"></i></a>
+		<div class="progress progress-striped btn-progress">
+			<div class="bar"></div>
+		</div>
+		<a class="btn prev" href="#"><i class="icon-step-backward"></i></a>
+		<a class="btn next" href="#"><i class="icon-step-forward"></i></a>
+	</div>
+</div>
+<div id="basket">
+	<div class="btn-group">
+		<a class="btn show-basket"><span class="badge basket-count">0</span> <i class="icon-caret-down"></i></a>
+		<a class="btn fill-basket"><i class="icon-plus"></i> Add Entire List to Basket</i></a>
+		<a class="btn download-basket"><i class="icon-cloud-download"></i> Download Basket</a>
+		<a class="btn empty-basket"><i class="icon-remove"></i> Empty Basket</a>
+	</div>
+	<div id="basket-container">
+		<table class="table table-striped table-condensed"></table>
+	</div>
+</div>
+<div id="login">
+	<form class="form-vertical">
+		<fieldset>
+			<legend>Login</legend>
+			<div class="control-group">
+				<div class="controls">
+					<div class="input-prepend">
+						<span class="add-on"><i class="icon-user"></i></span>
+						<input type="text" name="username" placeholder="Username">
+					</div>
+				</div>
+			</div>
+			<div class="control-group">
+				<div class="controls">
+					<div class="input-prepend">
+						<span class="add-on"><i class="icon-key"></i></span>
+						<input type="password" name="password" placeholder="Password">
+					</div>
+				</div>
+			</div>
+			<div class="control-group">
+				<div class="controls">
+					<button type="submit" class="btn btn-primary"><i class="icon-signin"></i> Login</button>
+				</div>
+			</div>
+		</fieldset>
+	</form>
+</div>
+<div id="loading"><i class="icon-cog icon-spin"></i></div> 
+
+</body>
+</html>
diff --git a/frontend/js/app.js b/frontend/js/app.js
new file mode 100644
index 0000000..45e7927
--- /dev/null
+++ b/frontend/js/app.js
@@ -0,0 +1,81 @@
+$(function() {
+	//XXX: Support for old zx2c4 music query strings. Replace query string with Backbone.Router hash urls
+	function qParam(name) {
+		var match = RegExp('[?&]' + name + '=([^&]*)').exec(window.location.search);
+		return match && decodeURIComponent(match[1].replace(/\+/g, ' '));
+	}
+
+	var startApp = function() {
+		$("#loading").fadeOut();
+
+		var audioPlayer = new AudioPlayer($("#controls"));
+		var songList = new SongList([], audioPlayer);
+		new SongTable({
+			el: $(document.body),
+			collection: songList
+		});
+		new DownloadSelector({
+			el: $("#basket"),
+			collection: new DownloadBasket([], { songList: songList })
+		});
+
+
+		var song = parseInt(qParam("play"));
+		if (!isNaN(song) && song > 0) {
+			songList.once("sync", function() {
+				var loadSong = function() {
+					if (song <= songList.length)
+						audioPlayer.playSong(songList.models[song - 1]);
+				};
+				if (song > songList.length && songList.hasMore())
+					songList.more({ success: loadSong, limit: song - songList.length });
+				else
+					loadSong();
+			});
+		}
+		var defaultChoices = [ "Wayne Shorter", "Bill Frisell", "Jimi Hendrix",
+				       "Allan Holdsworth", "Miles Davis", "Bill Evans",
+				       "Keith Jarret", "Kurt Rosenwinkel", "Gould", "Segovia",
+				       "Mike Stern", "John Coltrane", "McCoy Tyner",
+				       "BADBADNOTGOOD", "Charles Mingus", "Tribe Called Quest",
+				       "Lord of the Rings", "Pat Metheny" ];
+		$("#query").val(qParam("query") || defaultChoices[Math.floor(Math.random() * defaultChoices.length)]).change();
+	};
+
+	var startAuth = function() {
+		var login = $("#login").fadeIn();
+		$("#loading").fadeOut();
+		login.find("input").first().focus();
+		login.find("form").submit(function() {
+			var username = $(this.username).val();
+			var password = $(this.password).val();
+			var button = login.find("button").removeClass("btn-primary");
+			login.find("input").val("").removeClass("incorrect-login");
+			$.ajax("login", { type: "POST", data: { "username": username, "password": password } }).success(function(response) {
+				if (response.loggedin) {
+					button.addClass("btn-success");
+					login.fadeOut();
+					startApp();
+				} else {
+					login.find("input").first().focus();
+					login.find("input").val("").addClass("incorrect-login");
+					button.addClass("btn-danger");
+				}
+			});
+			return false;
+		});
+	};
+
+	var processLogin = function(response) {
+		if (response.loggedin)
+			startApp();
+		else
+			startAuth();
+	};
+
+	if (qParam("username") && qParam("password"))
+		$.ajax("login", { type: "POST", data: { "username": qParam("username"), "password": qParam("password") } }).success(processLogin);
+	else
+		$.ajax("login").success(processLogin);
+		
+});
diff --git a/frontend/js/controls/AudioPlayer.js b/frontend/js/controls/AudioPlayer.js
new file mode 100644
index 0000000..3ba0a18
--- /dev/null
+++ b/frontend/js/controls/AudioPlayer.js
@@ -0,0 +1,223 @@
+var AudioPlayer = function(controls) {
+	this.playing = null;
+	this.collection = null;
+	var that = this;
+
+	_(this).bindAll("playSong", "nextSong", "prevSong", "stopSong", "playPauseSong", "seekSong", "setNowPlaying");
+
+	this.$playPause = controls.find(".play-pause").click(this.playPauseSong);
+	this.$stop = controls.find(".stop").click(this.stopSong);
+	this.$progress = controls.find(".bar");
+	this.$progressContainer = controls.find(".progress");
+	this.$prev = controls.find(".prev").click(this.prevSong);
+	this.$next = controls.find(".next").click(this.nextSong);
+	this.$nowPlaying = controls.find(".current-track");
+	this.$audio = $("<audio>");
+	this.audio = this.$audio[0];
+	if (!(function() {
+		if (!that.audio.canPlayType)
+			return false;
+		for (var i = 0; i < AudioPlayer.preferredMimes.length; ++i) {
+			if (that.audio.canPlayType(AudioPlayer.preferredMimes[i]))
+				return true;
+		}
+		return false;
+	})()) {
+		alert("Your browser doesn't support any codecs for HTML5 audio.");
+		window.location.href = "http://www.google.com/chrome";
+	}
+	controls.append(this.$audio);
+	var setStatusText = function(text) {
+		return function() {
+			that.$nowPlaying.text(text);
+		};
+	};
+	this.audio.addEventListener("ended", this.nextSong);
+	this.audio.addEventListener("playing", this.setNowPlaying);
+	this.audio.addEventListener("loadstart", setStatusText("Loading..."));
+	this.audio.addEventListener("error", setStatusText("Error playing."));
+	this.audio.addEventListener("loadeddata", setStatusText("Loaded..."));
+	this.audio.addEventListener("play", function() {
+		that.$playPause.find("i").removeClass().addClass("icon-pause");
+		that.$progressContainer.addClass("active");
+	});
+	this.audio.addEventListener("pause", function() {
+		that.$playPause.find("i").removeClass().addClass("icon-play");
+		that.$progressContainer.removeClass("active");
+	});
+	this.audio.addEventListener("timeupdate", function() {
+		function formatTime(time) {
+			function pad(number) {
+				var ret = number.toString();
+				if (ret.length < 2)
+					return "0" + ret;
+				return ret;
+			}
+			var hours, minutes, seconds;
+			hours = Math.floor(time / (60 * 60));
+			minutes = Math.floor(time % (60 * 60) / 60);
+			seconds = Math.floor(time % (60 * 60) % 60);
+			if (hours == 0)
+				return pad(minutes) + ":" + pad(seconds);
+			return pad(hours) + ":" + pad(minutes) + ":" + pad(seconds);
+		}
+		var width, text;
+		if (isNaN(this.duration) || isNaN(this.currentTime)) {
+			width = 0;
+			text = "";
+		} else {
+			var duration = this.duration;
+			if (that.playing != null && (!isFinite(this.duration) || this.duration == this.currentTime))
+				duration = that.playing.get("length");
+			if (isNaN(duration) || !isFinite(duration) || duration <= 0) {
+				width = 100;
+				text = formatTime(this.currentTime);
+			} else {
+				width = this.currentTime / duration * 100;
+				text = formatTime(this.currentTime) + " / " + formatTime(duration);
+			}
+		}
+		that.$progress.css("width", width.toString() + "%");
+		that.$progress.text(text);
+	});
+
+	//XXX: Relocate this elsewhere.
+	var seekEvent = function(e) {
+		that.seekSong((e.pageX - that.$progressContainer.offset().left) / that.$progressContainer.width());
+	};
+	var buttonDown = false;
+	this.$progressContainer.mousemove(function(e) {
+		if (buttonDown)
+			seekEvent(e);
+	}).mousedown(function(e) {
+		buttonDown = true;
+		seekEvent(e);
+	});
+	$(document).mouseup(function() {
+		buttonDown = false;
+	});
+};
+AudioPlayer.prototype.setCollection = function(collection) {
+	this.collection = collection;
+};
+AudioPlayer.preferredMimes = [ "audio/webm", "audio/ogg", "audio/mpeg", "audio/flac", "audio/wav" ]
+AudioPlayer.mimeMap = { "audio/webm": "webm", "audio/mp4": "m4a", "audio/wav": "wav",
+			"audio/ogg": "ogg", "audio/x-ms-wma": "wma", "audio/flac": "flac",
+			"audio/x-musepack": "mpc", "audio/mpeg": "mp3" };
+AudioPlayer.prototype.getSources = function(id, mimetype) {
+	var sources = [];
+	if (mimetype in AudioPlayer.mimeMap)
+		sources.push({ src: "song/" + id + "." + AudioPlayer.mimeMap[mimetype], type: mimetype });
+	for (var i = 0; i < AudioPlayer.preferredMimes.length; ++i) {
+		if (mimetype == AudioPlayer.preferredMimes[i])
+			continue;
+		sources.push({ src: "song/" + id + "." + AudioPlayer.mimeMap[AudioPlayer.preferredMimes[i]],
+				type: AudioPlayer.preferredMimes[i] });
+	}
+	return sources;
+};
+AudioPlayer.prototype.setNowPlaying = function() {
+	if (this.playing == null)
+		return;
+	var tokens = [];
+	if (this.playing.get("artist").length)
+		tokens.push(this.playing.get("artist"));
+	if (this.playing.get("album").length)
+		tokens.push(this.playing.get("album"));
+	if (this.playing.get("title").length)
+		tokens.push(this.playing.get("title"));
+	this.$nowPlaying.text(tokens.join(" - "));
+};
+AudioPlayer.prototype.playSong = function(song) {
+	if (this.playing != null && song.id == this.playing.id)
+		return;
+	this.stopSong();
+	song.set("playing", true);
+	this.playing = song;
+	this.setNowPlaying();
+	var sources = this.getSources(song.id, song.get("mimetype"));
+	for (var i = 0; i < sources.length; ++i)
+		this.$audio.append($("<source>").attr("src", sources[i].src).attr("type", sources[i].type));
+	this.audio.load();
+	this.audio.play();
+};
+AudioPlayer.prototype.nextSong = function() {
+	if (this.collection == null)
+		return;
+	if (this.playing == null) {
+		if (this.collection.length != 0)
+			this.playSong(this.collection.at(0));
+		return;
+	}
+
+	var i;
+	for (i = 0; i < this.collection.length; ++i) {
+		if (this.playing.id == this.collection.at(i).id)
+			break;
+	}
+	if (i >= this.collection.length - 1) {
+		if (i == this.collection.length - 1 && this.collection.hasMore()) {
+			var that = this;
+			this.collection.more({ success: function() {
+				that.playSong(that.collection.at(i + 1))
+			}});
+		}
+		this.stopSong();
+		return;
+	}
+	this.playSong(this.collection.at(i + 1));
+};
+AudioPlayer.prototype.prevSong = function() {
+	if (this.collection == null)
+		return;
+	if (this.playing == null) {
+		if (this.collection.length != 0)
+			this.playSong(this.collection.at(this.collection.length - 1));
+		return;
+	}
+	if (this.audio.currentTime > 10) {
+		this.audio.currentTime = 0;
+		return;
+	}
+	var i;
+	for (i = 0; i < this.collection.length; ++i) {
+		if (this.playing.id == this.collection.at(i).id)
+			break;
+	}
+	if (i == 0) {
+		this.stopSong();
+		return;
+	}
+	this.playSong(this.collection.at(i - 1));
+};
+AudioPlayer.prototype.playPauseSong = function() {
+	if (this.playing == null) {
+		this.nextSong();
+		return;
+	}
+	if (this.audio.paused)
+		this.audio.play();
+	else
+		this.audio.pause();
+};
+AudioPlayer.prototype.stopSong = function() {
+	if (this.playing != null) {
+		this.playing.set("playing", false);
+		this.playing = null;
+	}
+	this.audio.pause();
+        this.$audio.empty();
+	this.audio.load();
+	this.$playPause.find("i").removeClass().addClass("icon-play");
+	this.$progressContainer.removeClass("active");
+	this.$progress.css("width", "0%");
+	this.$progress.text("");
+	this.$nowPlaying.text("");
+};
+AudioPlayer.prototype.seekSong = function(fraction) {
+	if (this.playing == null || !isFinite(this.audio.duration) || isNaN(this.audio.duration) || fraction > 1 || fraction < 0)
+		return;
+	if (this.audio.duration == this.audio.currentTime)
+		return;
+	this.audio.currentTime = this.audio.duration * fraction;
+};
diff --git a/frontend/js/lib/backbone.js b/frontend/js/lib/backbone.js
new file mode 100644
index 0000000..90e18d4
--- /dev/null
+++ b/frontend/js/lib/backbone.js
@@ -0,0 +1,1533 @@
+//     Backbone.js 0.9.9
+
+//     (c) 2010-2012 Jeremy Ashkenas, DocumentCloud Inc.
+//     Backbone may be freely distributed under the MIT license.
+//     For all details and documentation:
+//     http://backbonejs.org
+
+(function(){
+
+  // Initial Setup
+  // -------------
+
+  // Save a reference to the global object (`window` in the browser, `exports`
+  // on the server).
+  var root = this;
+
+  // Save the previous value of the `Backbone` variable, so that it can be
+  // restored later on, if `noConflict` is used.
+  var previousBackbone = root.Backbone;
+
+  // Create a local reference to array methods.
+  var array = [];
+  var push = array.push;
+  var slice = array.slice;
+  var splice = array.splice;
+
+  // The top-level namespace. All public Backbone classes and modules will
+  // be attached to this. Exported for both CommonJS and the browser.
+  var Backbone;
+  if (typeof exports !== 'undefined') {
+    Backbone = exports;
+  } else {
+    Backbone = root.Backbone = {};
+  }
+
+  // Current version of the library. Keep in sync with `package.json`.
+  Backbone.VERSION = '0.9.9';
+
+  // Require Underscore, if we're on the server, and it's not already present.
+  var _ = root._;
+  if (!_ && (typeof require !== 'undefined')) _ = require('underscore');
+
+  // For Backbone's purposes, jQuery, Zepto, or Ender owns the `$` variable.
+  Backbone.$ = root.jQuery || root.Zepto || root.ender;
+
+  // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
+  // to its previous owner. Returns a reference to this Backbone object.
+  Backbone.noConflict = function() {
+    root.Backbone = previousBackbone;
+    return this;
+  };
+
+  // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option
+  // will fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and
+  // set a `X-Http-Method-Override` header.
+  Backbone.emulateHTTP = false;
+
+  // Turn on `emulateJSON` to support legacy servers that can't deal with direct
+  // `application/json` requests ... will encode the body as
+  // `application/x-www-form-urlencoded` instead and will send the model in a
+  // form param named `model`.
+  Backbone.emulateJSON = false;
+
+  // Backbone.Events
+  // ---------------
+
+  // Regular expression used to split event strings.
+  var eventSplitter = /\s+/;
+
+  // Implement fancy features of the Events API such as multiple event
+  // names `"change blur"` and jQuery-style event maps `{change: action}`
+  // in terms of the existing API.
+  var eventsApi = function(obj, action, name, rest) {
+    if (!name) return true;
+    if (typeof name === 'object') {
+      for (var key in name) {
+        obj[action].apply(obj, [key, name[key]].concat(rest));
+      }
+    } else if (eventSplitter.test(name)) {
+      var names = name.split(eventSplitter);
+      for (var i = 0, l = names.length; i < l; i++) {
+        obj[action].apply(obj, [names[i]].concat(rest));
+      }
+    } else {
+      return true;
+    }
+  };
+
+  // Optimized internal dispatch function for triggering events. Tries to
+  // keep the usual cases speedy (most Backbone events have 3 arguments).
+  var triggerEvents = function(obj, events, args) {
+    var ev, i = -1, l = events.length;
+    switch (args.length) {
+    case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx);
+    return;
+    case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, args[0]);
+    return;
+    case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, args[0], args[1]);
+    return;
+    case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, args[0], args[1], args[2]);
+    return;
+    default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args);
+    }
+  };
+
+  // A module that can be mixed in to *any object* in order to provide it with
+  // custom events. You may bind with `on` or remove with `off` callback
+  // functions to an event; `trigger`-ing an event fires all callbacks in
+  // succession.
+  //
+  //     var object = {};
+  //     _.extend(object, Backbone.Events);
+  //     object.on('expand', function(){ alert('expanded'); });
+  //     object.trigger('expand');
+  //
+  var Events = Backbone.Events = {
+
+    // Bind one or more space separated events, or an events map,
+    // to a `callback` function. Passing `"all"` will bind the callback to
+    // all events fired.
+    on: function(name, callback, context) {
+      if (!(eventsApi(this, 'on', name, [callback, context]) && callback)) return this;
+      this._events || (this._events = {});
+      var list = this._events[name] || (this._events[name] = []);
+      list.push({callback: callback, context: context, ctx: context || this});
+      return this;
+    },
+
+    // Bind events to only be triggered a single time. After the first time
+    // the callback is invoked, it will be removed.
+    once: function(name, callback, context) {
+      if (!(eventsApi(this, 'once', name, [callback, context]) && callback)) return this;
+      var self = this;
+      var once = _.once(function() {
+        self.off(name, once);
+        callback.apply(this, arguments);
+      });
+      once._callback = callback;
+      this.on(name, once, context);
+      return this;
+    },
+
+    // Remove one or many callbacks. If `context` is null, removes all
+    // callbacks with that function. If `callback` is null, removes all
+    // callbacks for the event. If `events` is null, removes all bound
+    // callbacks for all events.
+    off: function(name, callback, context) {
+      var list, ev, events, names, i, l, j, k;
+      if (!this._events || !eventsApi(this, 'off', name, [callback, context])) return this;
+      if (!name && !callback && !context) {
+        this._events = {};
+        return this;
+      }
+
+      names = name ? [name] : _.keys(this._events);
+      for (i = 0, l = names.length; i < l; i++) {
+        name = names[i];
+        if (list = this._events[name]) {
+          events = [];
+          if (callback || context) {
+            for (j = 0, k = list.length; j < k; j++) {
+              ev = list[j];
+              if ((callback && callback !== (ev.callback._callback || ev.callback)) ||
+                  (context && context !== ev.context)) {
+                events.push(ev);
+              }
+            }
+          }
+          this._events[name] = events;
+        }
+      }
+
+      return this;
+    },
+
+    // Trigger one or many events, firing all bound callbacks. Callbacks are
+    // passed the same arguments as `trigger` is, apart from the event name
+    // (unless you're listening on `"all"`, which will cause your callback to
+    // receive the true name of the event as the first argument).
+    trigger: function(name) {
+      if (!this._events) return this;
+      var args = slice.call(arguments, 1);
+      if (!eventsApi(this, 'trigger', name, args)) return this;
+      var events = this._events[name];
+      var allEvents = this._events.all;
+      if (events) triggerEvents(this, events, args);
+      if (allEvents) triggerEvents(this, allEvents, arguments);
+      return this;
+    },
+
+    // An inversion-of-control version of `on`. Tell *this* object to listen to
+    // an event in another object ... keeping track of what it's listening to.
+    listenTo: function(object, events, callback) {
+      var listeners = this._listeners || (this._listeners = {});
+      var id = object._listenerId || (object._listenerId = _.uniqueId('l'));
+      listeners[id] = object;
+      object.on(events, callback || this, this);
+      return this;
+    },
+
+    // Tell this object to stop listening to either specific events ... or
+    // to every object it's currently listening to.
+    stopListening: function(object, events, callback) {
+      var listeners = this._listeners;
+      if (!listeners) return;
+      if (object) {
+        object.off(events, callback, this);
+        if (!events && !callback) delete listeners[object._listenerId];
+      } else {
+        for (var id in listeners) {
+          listeners[id].off(null, null, this);
+        }
+        this._listeners = {};
+      }
+      return this;
+    }
+  };
+
+  // Aliases for backwards compatibility.
+  Events.bind   = Events.on;
+  Events.unbind = Events.off;
+
+  // Allow the `Backbone` object to serve as a global event bus, for folks who
+  // want global "pubsub" in a convenient place.
+  _.extend(Backbone, Events);
+
+  // Backbone.Model
+  // --------------
+
+  // Create a new model, with defined attributes. A client id (`cid`)
+  // is automatically generated and assigned for you.
+  var Model = Backbone.Model = function(attributes, options) {
+    var defaults;
+    var attrs = attributes || {};
+    this.cid = _.uniqueId('c');
+    this.changed = {};
+    this.attributes = {};
+    this._changes = [];
+    if (options && options.collection) this.collection = options.collection;
+    if (options && options.parse) attrs = this.parse(attrs);
+    if (defaults = _.result(this, 'defaults')) _.defaults(attrs, defaults);
+    this.set(attrs, {silent: true});
+    this._currentAttributes = _.clone(this.attributes);
+    this._previousAttributes = _.clone(this.attributes);
+    this.initialize.apply(this, arguments);
+  };
+
+  // Attach all inheritable methods to the Model prototype.
+  _.extend(Model.prototype, Events, {
+
+    // A hash of attributes whose current and previous value differ.
+    changed: null,
+
+    // The default name for the JSON `id` attribute is `"id"`. MongoDB and
+    // CouchDB users may want to set this to `"_id"`.
+    idAttribute: 'id',
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // Return a copy of the model's `attributes` object.
+    toJSON: function(options) {
+      return _.clone(this.attributes);
+    },
+
+    // Proxy `Backbone.sync` by default.
+    sync: function() {
+      return Backbone.sync.apply(this, arguments);
+    },
+
+    // Get the value of an attribute.
+    get: function(attr) {
+      return this.attributes[attr];
+    },
+
+    // Get the HTML-escaped value of an attribute.
+    escape: function(attr) {
+      return _.escape(this.get(attr));
+    },
+
+    // Returns `true` if the attribute contains a value that is not null
+    // or undefined.
+    has: function(attr) {
+      return this.get(attr) != null;
+    },
+
+    // Set a hash of model attributes on the object, firing `"change"` unless
+    // you choose to silence it.
+    set: function(key, val, options) {
+      var attr, attrs;
+      if (key == null) return this;
+
+      // Handle both `"key", value` and `{key: value}` -style arguments.
+      if (_.isObject(key)) {
+        attrs = key;
+        options = val;
+      } else {
+        (attrs = {})[key] = val;
+      }
+
+      // Extract attributes and options.
+      var silent = options && options.silent;
+      var unset = options && options.unset;
+
+      // Run validation.
+      if (!this._validate(attrs, options)) return false;
+
+      // Check for changes of `id`.
+      if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];
+
+      var now = this.attributes;
+
+      // For each `set` attribute...
+      for (attr in attrs) {
+        val = attrs[attr];
+
+        // Update or delete the current value, and track the change.
+        unset ? delete now[attr] : now[attr] = val;
+        this._changes.push(attr, val);
+      }
+
+      // Signal that the model's state has potentially changed, and we need
+      // to recompute the actual changes.
+      this._hasComputed = false;
+
+      // Fire the `"change"` events.
+      if (!silent) this.change(options);
+      return this;
+    },
+
+    // Remove an attribute from the model, firing `"change"` unless you choose
+    // to silence it. `unset` is a noop if the attribute doesn't exist.
+    unset: function(attr, options) {
+      return this.set(attr, void 0, _.extend({}, options, {unset: true}));
+    },
+
+    // Clear all attributes on the model, firing `"change"` unless you choose
+    // to silence it.
+    clear: function(options) {
+      var attrs = {};
+      for (var key in this.attributes) attrs[key] = void 0;
+      return this.set(attrs, _.extend({}, options, {unset: true}));
+    },
+
+    // Fetch the model from the server. If the server's representation of the
+    // model differs from its current attributes, they will be overriden,
+    // triggering a `"change"` event.
+    fetch: function(options) {
+      options = options ? _.clone(options) : {};
+      if (options.parse === void 0) options.parse = true;
+      var model = this;
+      var success = options.success;
+      options.success = function(resp, status, xhr) {
+        if (!model.set(model.parse(resp), options)) return false;
+        if (success) success(model, resp, options);
+      };
+      return this.sync('read', this, options);
+    },
+
+    // Set a hash of model attributes, and sync the model to the server.
+    // If the server returns an attributes hash that differs, the model's
+    // state will be `set` again.
+    save: function(key, val, options) {
+      var attrs, current, done;
+
+      // Handle both `"key", value` and `{key: value}` -style arguments.
+      if (key == null || _.isObject(key)) {
+        attrs = key;
+        options = val;
+      } else if (key != null) {
+        (attrs = {})[key] = val;
+      }
+      options = options ? _.clone(options) : {};
+
+      // If we're "wait"-ing to set changed attributes, validate early.
+      if (options.wait) {
+        if (attrs && !this._validate(attrs, options)) return false;
+        current = _.clone(this.attributes);
+      }
+
+      // Regular saves `set` attributes before persisting to the server.
+      var silentOptions = _.extend({}, options, {silent: true});
+      if (attrs && !this.set(attrs, options.wait ? silentOptions : options)) {
+        return false;
+      }
+
+      // Do not persist invalid models.
+      if (!attrs && !this._validate(null, options)) return false;
+
+      // After a successful server-side save, the client is (optionally)
+      // updated with the server-side state.
+      var model = this;
+      var success = options.success;
+      options.success = function(resp, status, xhr) {
+        done = true;
+        var serverAttrs = model.parse(resp);
+        if (options.wait) serverAttrs = _.extend(attrs || {}, serverAttrs);
+        if (!model.set(serverAttrs, options)) return false;
+        if (success) success(model, resp, options);
+      };
+
+      // Finish configuring and sending the Ajax request.
+      var method = this.isNew() ? 'create' : (options.patch ? 'patch' : 'update');
+      if (method == 'patch') options.attrs = attrs;
+      var xhr = this.sync(method, this, options);
+
+      // When using `wait`, reset attributes to original values unless
+      // `success` has been called already.
+      if (!done && options.wait) {
+        this.clear(silentOptions);
+        this.set(current, silentOptions);
+      }
+
+      return xhr;
+    },
+
+    // Destroy this model on the server if it was already persisted.
+    // Optimistically removes the model from its collection, if it has one.
+    // If `wait: true` is passed, waits for the server to respond before removal.
+    destroy: function(options) {
+      options = options ? _.clone(options) : {};
+      var model = this;
+      var success = options.success;
+
+      var destroy = function() {
+        model.trigger('destroy', model, model.collection, options);
+      };
+
+      options.success = function(resp) {
+        if (options.wait || model.isNew()) destroy();
+        if (success) success(model, resp, options);
+      };
+
+      if (this.isNew()) {
+        options.success();
+        return false;
+      }
+
+      var xhr = this.sync('delete', this, options);
+      if (!options.wait) destroy();
+      return xhr;
+    },
+
+    // Default URL for the model's representation on the server -- if you're
+    // using Backbone's restful methods, override this to change the endpoint
+    // that will be called.
+    url: function() {
+      var base = _.result(this, 'urlRoot') || _.result(this.collection, 'url') || urlError();
+      if (this.isNew()) return base;
+      return base + (base.charAt(base.length - 1) === '/' ? '' : '/') + encodeURIComponent(this.id);
+    },
+
+    // **parse** converts a response into the hash of attributes to be `set` on
+    // the model. The default implementation is just to pass the response along.
+    parse: function(resp) {
+      return resp;
+    },
+
+    // Create a new model with identical attributes to this one.
+    clone: function() {
+      return new this.constructor(this.attributes);
+    },
+
+    // A model is new if it has never been saved to the server, and lacks an id.
+    isNew: function() {
+      return this.id == null;
+    },
+
+    // Call this method to manually fire a `"change"` event for this model and
+    // a `"change:attribute"` event for each changed attribute.
+    // Calling this will cause all objects observing the model to update.
+    change: function(options) {
+      var changing = this._changing;
+      this._changing = true;
+
+      // Generate the changes to be triggered on the model.
+      var triggers = this._computeChanges(true);
+
+      this._pending = !!triggers.length;
+
+      for (var i = triggers.length - 2; i >= 0; i -= 2) {
+        this.trigger('change:' + triggers[i], this, triggers[i + 1], options);
+      }
+
+      if (changing) return this;
+
+      // Trigger a `change` while there have been changes.
+      while (this._pending) {
+        this._pending = false;
+        this.trigger('change', this, options);
+        this._previousAttributes = _.clone(this.attributes);
+      }
+
+      this._changing = false;
+      return this;
+    },
+
+    // Determine if the model has changed since the last `"change"` event.
+    // If you specify an attribute name, determine if that attribute has changed.
+    hasChanged: function(attr) {
+      if (!this._hasComputed) this._computeChanges();
+      if (attr == null) return !_.isEmpty(this.changed);
+      return _.has(this.changed, attr);
+    },
+
+    // Return an object containing all the attributes that have changed, or
+    // false if there are no changed attributes. Useful for determining what
+    // parts of a view need to be updated and/or what attributes need to be
+    // persisted to the server. Unset attributes will be set to undefined.
+    // You can also pass an attributes object to diff against the model,
+    // determining if there *would be* a change.
+    changedAttributes: function(diff) {
+      if (!diff) return this.hasChanged() ? _.clone(this.changed) : false;
+      var val, changed = false, old = this._previousAttributes;
+      for (var attr in diff) {
+        if (_.isEqual(old[attr], (val = diff[attr]))) continue;
+        (changed || (changed = {}))[attr] = val;
+      }
+      return changed;
+    },
+
+    // Looking at the built up list of `set` attribute changes, compute how
+    // many of the attributes have actually changed. If `loud`, return a
+    // boiled-down list of only the real changes.
+    _computeChanges: function(loud) {
+      this.changed = {};
+      var already = {};
+      var triggers = [];
+      var current = this._currentAttributes;
+      var changes = this._changes;
+
+      // Loop through the current queue of potential model changes.
+      for (var i = changes.length - 2; i >= 0; i -= 2) {
+        var key = changes[i], val = changes[i + 1];
+        if (already[key]) continue;
+        already[key] = true;
+
+        // Check if the attribute has been modified since the last change,
+        // and update `this.changed` accordingly. If we're inside of a `change`
+        // call, also add a trigger to the list.
+        if (current[key] !== val) {
+          this.changed[key] = val;
+          if (!loud) continue;
+          triggers.push(key, val);
+          current[key] = val;
+        }
+      }
+      if (loud) this._changes = [];
+
+      // Signals `this.changed` is current to prevent duplicate calls from `this.hasChanged`.
+      this._hasComputed = true;
+      return triggers;
+    },
+
+    // Get the previous value of an attribute, recorded at the time the last
+    // `"change"` event was fired.
+    previous: function(attr) {
+      if (attr == null || !this._previousAttributes) return null;
+      return this._previousAttributes[attr];
+    },
+
+    // Get all of the attributes of the model at the time of the previous
+    // `"change"` event.
+    previousAttributes: function() {
+      return _.clone(this._previousAttributes);
+    },
+
+    // Run validation against the next complete set of model attributes,
+    // returning `true` if all is well. If a specific `error` callback has
+    // been passed, call that instead of firing the general `"error"` event.
+    _validate: function(attrs, options) {
+      if (!this.validate) return true;
+      attrs = _.extend({}, this.attributes, attrs);
+      var error = this.validate(attrs, options);
+      if (!error) return true;
+      if (options && options.error) options.error(this, error, options);
+      this.trigger('error', this, error, options);
+      return false;
+    }
+
+  });
+
+  // Backbone.Collection
+  // -------------------
+
+  // Provides a standard collection class for our sets of models, ordered
+  // or unordered. If a `comparator` is specified, the Collection will maintain
+  // its models in sort order, as they're added and removed.
+  var Collection = Backbone.Collection = function(models, options) {
+    options || (options = {});
+    if (options.model) this.model = options.model;
+    if (options.comparator !== void 0) this.comparator = options.comparator;
+    this._reset();
+    this.initialize.apply(this, arguments);
+    if (models) this.reset(models, _.extend({silent: true}, options));
+  };
+
+  // Define the Collection's inheritable methods.
+  _.extend(Collection.prototype, Events, {
+
+    // The default model for a collection is just a **Backbone.Model**.
+    // This should be overridden in most cases.
+    model: Model,
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // The JSON representation of a Collection is an array of the
+    // models' attributes.
+    toJSON: function(options) {
+      return this.map(function(model){ return model.toJSON(options); });
+    },
+
+    // Proxy `Backbone.sync` by default.
+    sync: function() {
+      return Backbone.sync.apply(this, arguments);
+    },
+
+    // Add a model, or list of models to the set. Pass **silent** to avoid
+    // firing the `add` event for every new model.
+    add: function(models, options) {
+      var i, args, length, model, existing, needsSort;
+      var at = options && options.at;
+      var sort = ((options && options.sort) == null ? true : options.sort);
+      models = _.isArray(models) ? models.slice() : [models];
+
+      // Turn bare objects into model references, and prevent invalid models
+      // from being added.
+      for (i = models.length - 1; i >= 0; i--) {
+        if(!(model = this._prepareModel(models[i], options))) {
+          this.trigger("error", this, models[i], options);
+          models.splice(i, 1);
+          continue;
+        }
+        models[i] = model;
+
+        existing = model.id != null && this._byId[model.id];
+        // If a duplicate is found, prevent it from being added and
+        // optionally merge it into the existing model.
+        if (existing || this._byCid[model.cid]) {
+          if (options && options.merge && existing) {
+            existing.set(model.attributes, options);
+            needsSort = sort;
+          }
+          models.splice(i, 1);
+          continue;
+        }
+
+        // Listen to added models' events, and index models for lookup by
+        // `id` and by `cid`.
+        model.on('all', this._onModelEvent, this);
+        this._byCid[model.cid] = model;
+        if (model.id != null) this._byId[model.id] = model;
+      }
+
+      // See if sorting is needed, update `length` and splice in new models.
+      if (models.length) needsSort = sort;
+      this.length += models.length;
+      args = [at != null ? at : this.models.length, 0];
+      push.apply(args, models);
+      splice.apply(this.models, args);
+
+      // Sort the collection if appropriate.
+      if (needsSort && this.comparator && at == null) this.sort({silent: true});
+
+      if (options && options.silent) return this;
+
+      // Trigger `add` events.
+      while (model = models.shift()) {
+        model.trigger('add', model, this, options);
+      }
+
+      return this;
+    },
+
+    // Remove a model, or a list of models from the set. Pass silent to avoid
+    // firing the `remove` event for every model removed.
+    remove: function(models, options) {
+      var i, l, index, model;
+      options || (options = {});
+      models = _.isArray(models) ? models.slice() : [models];
+      for (i = 0, l = models.length; i < l; i++) {
+        model = this.get(models[i]);
+        if (!model) continue;
+        delete this._byId[model.id];
+        delete this._byCid[model.cid];
+        index = this.indexOf(model);
+        this.models.splice(index, 1);
+        this.length--;
+        if (!options.silent) {
+          options.index = index;
+          model.trigger('remove', model, this, options);
+        }
+        this._removeReference(model);
+      }
+      return this;
+    },
+
+    // Add a model to the end of the collection.
+    push: function(model, options) {
+      model = this._prepareModel(model, options);
+      this.add(model, _.extend({at: this.length}, options));
+      return model;
+    },
+
+    // Remove a model from the end of the collection.
+    pop: function(options) {
+      var model = this.at(this.length - 1);
+      this.remove(model, options);
+      return model;
+    },
+
+    // Add a model to the beginning of the collection.
+    unshift: function(model, options) {
+      model = this._prepareModel(model, options);
+      this.add(model, _.extend({at: 0}, options));
+      return model;
+    },
+
+    // Remove a model from the beginning of the collection.
+    shift: function(options) {
+      var model = this.at(0);
+      this.remove(model, options);
+      return model;
+    },
+
+    // Slice out a sub-array of models from the collection.
+    slice: function(begin, end) {
+      return this.models.slice(begin, end);
+    },
+
+    // Get a model from the set by id.
+    get: function(obj) {
+      if (obj == null) return void 0;
+      return this._byId[obj.id != null ? obj.id : obj] || this._byCid[obj.cid || obj];
+    },
+
+    // Get the model at the given index.
+    at: function(index) {
+      return this.models[index];
+    },
+
+    // Return models with matching attributes. Useful for simple cases of `filter`.
+    where: function(attrs) {
+      if (_.isEmpty(attrs)) return [];
+      return this.filter(function(model) {
+        for (var key in attrs) {
+          if (attrs[key] !== model.get(key)) return false;
+        }
+        return true;
+      });
+    },
+
+    // Force the collection to re-sort itself. You don't need to call this under
+    // normal circumstances, as the set will maintain sort order as each item
+    // is added.
+    sort: function(options) {
+      if (!this.comparator) {
+        throw new Error('Cannot sort a set without a comparator');
+      }
+
+      if (_.isString(this.comparator) || this.comparator.length === 1) {
+        this.models = this.sortBy(this.comparator, this);
+      } else {
+        this.models.sort(_.bind(this.comparator, this));
+      }
+
+      if (!options || !options.silent) this.trigger('sort', this, options);
+      return this;
+    },
+
+    // Pluck an attribute from each model in the collection.
+    pluck: function(attr) {
+      return _.invoke(this.models, 'get', attr);
+    },
+
+    // Smartly update a collection with a change set of models, adding,
+    // removing, and merging as necessary.
+    update: function(models, options) {
+      var model, i, l, existing;
+      var add = [], remove = [], modelMap = {};
+      var idAttr = this.model.prototype.idAttribute;
+      options = _.extend({add: true, merge: true, remove: true}, options);
+      if (options.parse) models = this.parse(models);
+
+      // Allow a single model (or no argument) to be passed.
+      if (!_.isArray(models)) models = models ? [models] : [];
+
+      // Proxy to `add` for this case, no need to iterate...
+      if (options.add && !options.remove) return this.add(models, options);
+
+      // Determine which models to add and merge, and which to remove.
+      for (i = 0, l = models.length; i < l; i++) {
+        model = models[i];
+        existing = this.get(model.id || model.cid || model[idAttr]);
+        if (options.remove && existing) modelMap[existing.cid] = true;
+        if ((options.add && !existing) || (options.merge && existing)) {
+          add.push(model);
+        }
+      }
+      if (options.remove) {
+        for (i = 0, l = this.models.length; i < l; i++) {
+          model = this.models[i];
+          if (!modelMap[model.cid]) remove.push(model);
+        }
+      }
+
+      // Remove models (if applicable) before we add and merge the rest.
+      if (remove.length) this.remove(remove, options);
+      if (add.length) this.add(add, options);
+      return this;
+    },
+
+    // When you have more items than you want to add or remove individually,
+    // you can reset the entire set with a new list of models, without firing
+    // any `add` or `remove` events. Fires `reset` when finished.
+    reset: function(models, options) {
+      options || (options = {});
+      if (options.parse) models = this.parse(models);
+      for (var i = 0, l = this.models.length; i < l; i++) {
+        this._removeReference(this.models[i]);
+      }
+      options.previousModels = this.models;
+      this._reset();
+      if (models) this.add(models, _.extend({silent: true}, options));
+      if (!options.silent) this.trigger('reset', this, options);
+      return this;
+    },
+
+    // Fetch the default set of models for this collection, resetting the
+    // collection when they arrive. If `add: true` is passed, appends the
+    // models to the collection instead of resetting.
+    fetch: function(options) {
+      options = options ? _.clone(options) : {};
+      if (options.parse === void 0) options.parse = true;
+      var collection = this;
+      var success = options.success;
+      options.success = function(resp, status, xhr) {
+        var method = options.update ? 'update' : 'reset';
+        collection[method](resp, options);
+        if (success) success(collection, resp, options);
+      };
+      return this.sync('read', this, options);
+    },
+
+    // Create a new instance of a model in this collection. Add the model to the
+    // collection immediately, unless `wait: true` is passed, in which case we
+    // wait for the server to agree.
+    create: function(model, options) {
+      var collection = this;
+      options = options ? _.clone(options) : {};
+      model = this._prepareModel(model, options);
+      if (!model) return false;
+      if (!options.wait) collection.add(model, options);
+      var success = options.success;
+      options.success = function(model, resp, options) {
+        if (options.wait) collection.add(model, options);
+        if (success) success(model, resp, options);
+      };
+      model.save(null, options);
+      return model;
+    },
+
+    // **parse** converts a response into a list of models to be added to the
+    // collection. The default implementation is just to pass it through.
+    parse: function(resp) {
+      return resp;
+    },
+
+    // Create a new collection with an identical list of models as this one.
+    clone: function() {
+      return new this.constructor(this.models);
+    },
+
+    // Proxy to _'s chain. Can't be proxied the same way the rest of the
+    // underscore methods are proxied because it relies on the underscore
+    // constructor.
+    chain: function() {
+      return _(this.models).chain();
+    },
+
+    // Reset all internal state. Called when the collection is reset.
+    _reset: function() {
+      this.length = 0;
+      this.models = [];
+      this._byId  = {};
+      this._byCid = {};
+    },
+
+    // Prepare a model or hash of attributes to be added to this collection.
+    _prepareModel: function(attrs, options) {
+      if (attrs instanceof Model) {
+        if (!attrs.collection) attrs.collection = this;
+        return attrs;
+      }
+      options || (options = {});
+      options.collection = this;
+      var model = new this.model(attrs, options);
+      if (!model._validate(attrs, options)) return false;
+      return model;
+    },
+
+    // Internal method to remove a model's ties to a collection.
+    _removeReference: function(model) {
+      if (this === model.collection) delete model.collection;
+      model.off('all', this._onModelEvent, this);
+    },
+
+    // Internal method called every time a model in the set fires an event.
+    // Sets need to update their indexes when models change ids. All other
+    // events simply proxy through. "add" and "remove" events that originate
+    // in other collections are ignored.
+    _onModelEvent: function(event, model, collection, options) {
+      if ((event === 'add' || event === 'remove') && collection !== this) return;
+      if (event === 'destroy') this.remove(model, options);
+      if (model && event === 'change:' + model.idAttribute) {
+        delete this._byId[model.previous(model.idAttribute)];
+        if (model.id != null) this._byId[model.id] = model;
+      }
+      this.trigger.apply(this, arguments);
+    }
+
+  });
+
+  // Underscore methods that we want to implement on the Collection.
+  var methods = ['forEach', 'each', 'map', 'collect', 'reduce', 'foldl',
+    'inject', 'reduceRight', 'foldr', 'find', 'detect', 'filter', 'select',
+    'reject', 'every', 'all', 'some', 'any', 'include', 'contains', 'invoke',
+    'max', 'min', 'sortedIndex', 'toArray', 'size', 'first', 'head', 'take',
+    'initial', 'rest', 'tail', 'last', 'without', 'indexOf', 'shuffle',
+    'lastIndexOf', 'isEmpty'];
+
+  // Mix in each Underscore method as a proxy to `Collection#models`.
+  _.each(methods, function(method) {
+    Collection.prototype[method] = function() {
+      var args = slice.call(arguments);
+      args.unshift(this.models);
+      return _[method].apply(_, args);
+    };
+  });
+
+  // Underscore methods that take a property name as an argument.
+  var attributeMethods = ['groupBy', 'countBy', 'sortBy'];
+
+  // Use attributes instead of properties.
+  _.each(attributeMethods, function(method) {
+    Collection.prototype[method] = function(value, context) {
+      var iterator = _.isFunction(value) ? value : function(model) {
+        return model.get(value);
+      };
+      return _[method](this.models, iterator, context);
+    };
+  });
+
+  // Backbone.Router
+  // ---------------
+
+  // Routers map faux-URLs to actions, and fire events when routes are
+  // matched. Creating a new one sets its `routes` hash, if not set statically.
+  var Router = Backbone.Router = function(options) {
+    options || (options = {});
+    if (options.routes) this.routes = options.routes;
+    this._bindRoutes();
+    this.initialize.apply(this, arguments);
+  };
+
+  // Cached regular expressions for matching named param parts and splatted
+  // parts of route strings.
+  var optionalParam = /\((.*?)\)/g;
+  var namedParam    = /:\w+/g;
+  var splatParam    = /\*\w+/g;
+  var escapeRegExp  = /[\-{}\[\]+?.,\\\^$|#\s]/g;
+
+  // Set up all inheritable **Backbone.Router** properties and methods.
+  _.extend(Router.prototype, Events, {
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // Manually bind a single named route to a callback. For example:
+    //
+    //     this.route('search/:query/p:num', 'search', function(query, num) {
+    //       ...
+    //     });
+    //
+    route: function(route, name, callback) {
+      if (!_.isRegExp(route)) route = this._routeToRegExp(route);
+      if (!callback) callback = this[name];
+      Backbone.history.route(route, _.bind(function(fragment) {
+        var args = this._extractParameters(route, fragment);
+        callback && callback.apply(this, args);
+        this.trigger.apply(this, ['route:' + name].concat(args));
+        Backbone.history.trigger('route', this, name, args);
+      }, this));
+      return this;
+    },
+
+    // Simple proxy to `Backbone.history` to save a fragment into the history.
+    navigate: function(fragment, options) {
+      Backbone.history.navigate(fragment, options);
+      return this;
+    },
+
+    // Bind all defined routes to `Backbone.history`. We have to reverse the
+    // order of the routes here to support behavior where the most general
+    // routes can be defined at the bottom of the route map.
+    _bindRoutes: function() {
+      if (!this.routes) return;
+      var route, routes = _.keys(this.routes);
+      while ((route = routes.pop()) != null) {
+        this.route(route, this.routes[route]);
+      }
+    },
+
+    // Convert a route string into a regular expression, suitable for matching
+    // against the current location hash.
+    _routeToRegExp: function(route) {
+      route = route.replace(escapeRegExp, '\\$&')
+                   .replace(optionalParam, '(?:$1)?')
+                   .replace(namedParam, '([^\/]+)')
+                   .replace(splatParam, '(.*?)');
+      return new RegExp('^' + route + '$');
+    },
+
+    // Given a route, and a URL fragment that it matches, return the array of
+    // extracted parameters.
+    _extractParameters: function(route, fragment) {
+      return route.exec(fragment).slice(1);
+    }
+
+  });
+
+  // Backbone.History
+  // ----------------
+
+  // Handles cross-browser history management, based on URL fragments. If the
+  // browser does not support `onhashchange`, falls back to polling.
+  var History = Backbone.History = function() {
+    this.handlers = [];
+    _.bindAll(this, 'checkUrl');
+
+    // Ensure that `History` can be used outside of the browser.
+    if (typeof window !== 'undefined') {
+      this.location = window.location;
+      this.history = window.history;
+    }
+  };
+
+  // Cached regex for stripping a leading hash/slash and trailing space.
+  var routeStripper = /^[#\/]|\s+$/g;
+
+  // Cached regex for stripping leading and trailing slashes.
+  var rootStripper = /^\/+|\/+$/g;
+
+  // Cached regex for detecting MSIE.
+  var isExplorer = /msie [\w.]+/;
+
+  // Cached regex for removing a trailing slash.
+  var trailingSlash = /\/$/;
+
+  // Has the history handling already been started?
+  History.started = false;
+
+  // Set up all inheritable **Backbone.History** properties and methods.
+  _.extend(History.prototype, Events, {
+
+    // The default interval to poll for hash changes, if necessary, is
+    // twenty times a second.
+    interval: 50,
+
+    // Gets the true hash value. Cannot use location.hash directly due to bug
+    // in Firefox where location.hash will always be decoded.
+    getHash: function(window) {
+      var match = (window || this).location.href.match(/#(.*)$/);
+      return match ? match[1] : '';
+    },
+
+    // Get the cross-browser normalized URL fragment, either from the URL,
+    // the hash, or the override.
+    getFragment: function(fragment, forcePushState) {
+      if (fragment == null) {
+        if (this._hasPushState || !this._wantsHashChange || forcePushState) {
+          fragment = this.location.pathname;
+          var root = this.root.replace(trailingSlash, '');
+          if (!fragment.indexOf(root)) fragment = fragment.substr(root.length);
+        } else {
+          fragment = this.getHash();
+        }
+      }
+      return fragment.replace(routeStripper, '');
+    },
+
+    // Start the hash change handling, returning `true` if the current URL matches
+    // an existing route, and `false` otherwise.
+    start: function(options) {
+      if (History.started) throw new Error("Backbone.history has already been started");
+      History.started = true;
+
+      // Figure out the initial configuration. Do we need an iframe?
+      // Is pushState desired ... is it available?
+      this.options          = _.extend({}, {root: '/'}, this.options, options);
+      this.root             = this.options.root;
+      this._wantsHashChange = this.options.hashChange !== false;
+      this._wantsPushState  = !!this.options.pushState;
+      this._hasPushState    = !!(this.options.pushState && this.history && this.history.pushState);
+      var fragment          = this.getFragment();
+      var docMode           = document.documentMode;
+      var oldIE             = (isExplorer.exec(navigator.userAgent.toLowerCase()) && (!docMode || docMode <= 7));
+
+      // Normalize root to always include a leading and trailing slash.
+      this.root = ('/' + this.root + '/').replace(rootStripper, '/');
+
+      if (oldIE && this._wantsHashChange) {
+        this.iframe = Backbone.$('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo('body')[0].contentWindow;
+        this.navigate(fragment);
+      }
+
+      // Depending on whether we're using pushState or hashes, and whether
+      // 'onhashchange' is supported, determine how we check the URL state.
+      if (this._hasPushState) {
+        Backbone.$(window).bind('popstate', this.checkUrl);
+      } else if (this._wantsHashChange && ('onhashchange' in window) && !oldIE) {
+        Backbone.$(window).bind('hashchange', this.checkUrl);
+      } else if (this._wantsHashChange) {
+        this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
+      }
+
+      // Determine if we need to change the base url, for a pushState link
+      // opened by a non-pushState browser.
+      this.fragment = fragment;
+      var loc = this.location;
+      var atRoot = loc.pathname.replace(/[^\/]$/, '$&/') === this.root;
+
+      // If we've started off with a route from a `pushState`-enabled browser,
+      // but we're currently in a browser that doesn't support it...
+      if (this._wantsHashChange && this._wantsPushState && !this._hasPushState && !atRoot) {
+        this.fragment = this.getFragment(null, true);
+        this.location.replace(this.root + this.location.search + '#' + this.fragment);
+        // Return immediately as browser will do redirect to new url
+        return true;
+
+      // Or if we've started out with a hash-based route, but we're currently
+      // in a browser where it could be `pushState`-based instead...
+      } else if (this._wantsPushState && this._hasPushState && atRoot && loc.hash) {
+        this.fragment = this.getHash().replace(routeStripper, '');
+        this.history.replaceState({}, document.title, this.root + this.fragment + loc.search);
+      }
+
+      if (!this.options.silent) return this.loadUrl();
+    },
+
+    // Disable Backbone.history, perhaps temporarily. Not useful in a real app,
+    // but possibly useful for unit testing Routers.
+    stop: function() {
+      Backbone.$(window).unbind('popstate', this.checkUrl).unbind('hashchange', this.checkUrl);
+      clearInterval(this._checkUrlInterval);
+      History.started = false;
+    },
+
+    // Add a route to be tested when the fragment changes. Routes added later
+    // may override previous routes.
+    route: function(route, callback) {
+      this.handlers.unshift({route: route, callback: callback});
+    },
+
+    // Checks the current URL to see if it has changed, and if it has,
+    // calls `loadUrl`, normalizing across the hidden iframe.
+    checkUrl: function(e) {
+      var current = this.getFragment();
+      if (current === this.fragment && this.iframe) {
+        current = this.getFragment(this.getHash(this.iframe));
+      }
+      if (current === this.fragment) return false;
+      if (this.iframe) this.navigate(current);
+      this.loadUrl() || this.loadUrl(this.getHash());
+    },
+
+    // Attempt to load the current URL fragment. If a route succeeds with a
+    // match, returns `true`. If no defined routes matches the fragment,
+    // returns `false`.
+    loadUrl: function(fragmentOverride) {
+      var fragment = this.fragment = this.getFragment(fragmentOverride);
+      var matched = _.any(this.handlers, function(handler) {
+        if (handler.route.test(fragment)) {
+          handler.callback(fragment);
+          return true;
+        }
+      });
+      return matched;
+    },
+
+    // Save a fragment into the hash history, or replace the URL state if the
+    // 'replace' option is passed. You are responsible for properly URL-encoding
+    // the fragment in advance.
+    //
+    // The options object can contain `trigger: true` if you wish to have the
+    // route callback be fired (not usually desirable), or `replace: true`, if
+    // you wish to modify the current URL without adding an entry to the history.
+    navigate: function(fragment, options) {
+      if (!History.started) return false;
+      if (!options || options === true) options = {trigger: options};
+      fragment = this.getFragment(fragment || '');
+      if (this.fragment === fragment) return;
+      this.fragment = fragment;
+      var url = this.root + fragment;
+
+      // If pushState is available, we use it to set the fragment as a real URL.
+      if (this._hasPushState) {
+        this.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, url);
+
+      // If hash changes haven't been explicitly disabled, update the hash
+      // fragment to store history.
+      } else if (this._wantsHashChange) {
+        this._updateHash(this.location, fragment, options.replace);
+        if (this.iframe && (fragment !== this.getFragment(this.getHash(this.iframe)))) {
+          // Opening and closing the iframe tricks IE7 and earlier to push a
+          // history entry on hash-tag change.  When replace is true, we don't
+          // want this.
+          if(!options.replace) this.iframe.document.open().close();
+          this._updateHash(this.iframe.location, fragment, options.replace);
+        }
+
+      // If you've told us that you explicitly don't want fallback hashchange-
+      // based history, then `navigate` becomes a page refresh.
+      } else {
+        return this.location.assign(url);
+      }
+      if (options.trigger) this.loadUrl(fragment);
+    },
+
+    // Update the hash location, either replacing the current entry, or adding
+    // a new one to the browser history.
+    _updateHash: function(location, fragment, replace) {
+      if (replace) {
+        var href = location.href.replace(/(javascript:|#).*$/, '');
+        location.replace(href + '#' + fragment);
+      } else {
+        // Some browsers require that `hash` contains a leading #.
+        location.hash = '#' + fragment;
+      }
+    }
+
+  });
+
+  // Create the default Backbone.history.
+  Backbone.history = new History;
+
+  // Backbone.View
+  // -------------
+
+  // Creating a Backbone.View creates its initial element outside of the DOM,
+  // if an existing element is not provided...
+  var View = Backbone.View = function(options) {
+    this.cid = _.uniqueId('view');
+    this._configure(options || {});
+    this._ensureElement();
+    this.initialize.apply(this, arguments);
+    this.delegateEvents();
+  };
+
+  // Cached regex to split keys for `delegate`.
+  var delegateEventSplitter = /^(\S+)\s*(.*)$/;
+
+  // List of view options to be merged as properties.
+  var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName', 'events'];
+
+  // Set up all inheritable **Backbone.View** properties and methods.
+  _.extend(View.prototype, Events, {
+
+    // The default `tagName` of a View's element is `"div"`.
+    tagName: 'div',
+
+    // jQuery delegate for element lookup, scoped to DOM elements within the
+    // current view. This should be prefered to global lookups where possible.
+    $: function(selector) {
+      return this.$el.find(selector);
+    },
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // **render** is the core function that your view should override, in order
+    // to populate its element (`this.el`), with the appropriate HTML. The
+    // convention is for **render** to always return `this`.
+    render: function() {
+      return this;
+    },
+
+    // Remove this view by taking the element out of the DOM, and removing any
+    // applicable Backbone.Events listeners.
+    remove: function() {
+      this.$el.remove();
+      this.stopListening();
+      return this;
+    },
+
+    // For small amounts of DOM Elements, where a full-blown template isn't
+    // needed, use **make** to manufacture elements, one at a time.
+    //
+    //     var el = this.make('li', {'class': 'row'}, this.model.escape('title'));
+    //
+    make: function(tagName, attributes, content) {
+      var el = document.createElement(tagName);
+      if (attributes) Backbone.$(el).attr(attributes);
+      if (content != null) Backbone.$(el).html(content);
+      return el;
+    },
+
+    // Change the view's element (`this.el` property), including event
+    // re-delegation.
+    setElement: function(element, delegate) {
+      if (this.$el) this.undelegateEvents();
+      this.$el = element instanceof Backbone.$ ? element : Backbone.$(element);
+      this.el = this.$el[0];
+      if (delegate !== false) this.delegateEvents();
+      return this;
+    },
+
+    // Set callbacks, where `this.events` is a hash of
+    //
+    // *{"event selector": "callback"}*
+    //
+    //     {
+    //       'mousedown .title':  'edit',
+    //       'click .button':     'save'
+    //       'click .open':       function(e) { ... }
+    //     }
+    //
+    // pairs. Callbacks will be bound to the view, with `this` set properly.
+    // Uses event delegation for efficiency.
+    // Omitting the selector binds the event to `this.el`.
+    // This only works for delegate-able events: not `focus`, `blur`, and
+    // not `change`, `submit`, and `reset` in Internet Explorer.
+    delegateEvents: function(events) {
+      if (!(events || (events = _.result(this, 'events')))) return;
+      this.undelegateEvents();
+      for (var key in events) {
+        var method = events[key];
+        if (!_.isFunction(method)) method = this[events[key]];
+        if (!method) throw new Error('Method "' + events[key] + '" does not exist');
+        var match = key.match(delegateEventSplitter);
+        var eventName = match[1], selector = match[2];
+        method = _.bind(method, this);
+        eventName += '.delegateEvents' + this.cid;
+        if (selector === '') {
+          this.$el.bind(eventName, method);
+        } else {
+          this.$el.delegate(selector, eventName, method);
+        }
+      }
+    },
+
+    // Clears all callbacks previously bound to the view with `delegateEvents`.
+    // You usually don't need to use this, but may wish to if you have multiple
+    // Backbone views attached to the same DOM element.
+    undelegateEvents: function() {
+      this.$el.unbind('.delegateEvents' + this.cid);
+    },
+
+    // Performs the initial configuration of a View with a set of options.
+    // Keys with special meaning *(model, collection, id, className)*, are
+    // attached directly to the view.
+    _configure: function(options) {
+      if (this.options) options = _.extend({}, _.result(this, 'options'), options);
+      _.extend(this, _.pick(options, viewOptions));
+      this.options = options;
+    },
+
+    // Ensure that the View has a DOM element to render into.
+    // If `this.el` is a string, pass it through `$()`, take the first
+    // matching element, and re-assign it to `el`. Otherwise, create
+    // an element from the `id`, `className` and `tagName` properties.
+    _ensureElement: function() {
+      if (!this.el) {
+        var attrs = _.extend({}, _.result(this, 'attributes'));
+        if (this.id) attrs.id = _.result(this, 'id');
+        if (this.className) attrs['class'] = _.result(this, 'className');
+        this.setElement(this.make(_.result(this, 'tagName'), attrs), false);
+      } else {
+        this.setElement(_.result(this, 'el'), false);
+      }
+    }
+
+  });
+
+  // Backbone.sync
+  // -------------
+
+  // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
+  var methodMap = {
+    'create': 'POST',
+    'update': 'PUT',
+    'patch':  'PATCH',
+    'delete': 'DELETE',
+    'read':   'GET'
+  };
+
+  // Override this function to change the manner in which Backbone persists
+  // models to the server. You will be passed the type of request, and the
+  // model in question. By default, makes a RESTful Ajax request
+  // to the model's `url()`. Some possible customizations could be:
+  //
+  // * Use `setTimeout` to batch rapid-fire updates into a single request.
+  // * Send up the models as XML instead of JSON.
+  // * Persist models via WebSockets instead of Ajax.
+  //
+  // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
+  // as `POST`, with a `_method` parameter containing the true HTTP method,
+  // as well as all requests with the body as `application/x-www-form-urlencoded`
+  // instead of `application/json` with the model in a param named `model`.
+  // Useful when interfacing with server-side languages like **PHP** that make
+  // it difficult to read the body of `PUT` requests.
+  Backbone.sync = function(method, model, options) {
+    var type = methodMap[method];
+
+    // Default options, unless specified.
+    _.defaults(options || (options = {}), {
+      emulateHTTP: Backbone.emulateHTTP,
+      emulateJSON: Backbone.emulateJSON
+    });
+
+    // Default JSON-request options.
+    var params = {type: type, dataType: 'json'};
+
+    // Ensure that we have a URL.
+    if (!options.url) {
+      params.url = _.result(model, 'url') || urlError();
+    }
+
+    // Ensure that we have the appropriate request data.
+    if (options.data == null && model && (method === 'create' || method === 'update' || method === 'patch')) {
+      params.contentType = 'application/json';
+      params.data = JSON.stringify(options.attrs || model.toJSON(options));
+    }
+
+    // For older servers, emulate JSON by encoding the request into an HTML-form.
+    if (options.emulateJSON) {
+      params.contentType = 'application/x-www-form-urlencoded';
+      params.data = params.data ? {model: params.data} : {};
+    }
+
+    // For older servers, emulate HTTP by mimicking the HTTP method with `_method`
+    // And an `X-HTTP-Method-Override` header.
+    if (options.emulateHTTP && (type === 'PUT' || type === 'DELETE' || type === 'PATCH')) {
+      params.type = 'POST';
+      if (options.emulateJSON) params.data._method = type;
+      var beforeSend = options.beforeSend;
+      options.beforeSend = function(xhr) {
+        xhr.setRequestHeader('X-HTTP-Method-Override', type);
+        if (beforeSend) return beforeSend.apply(this, arguments);
+      };
+    }
+
+    // Don't process data on a non-GET request.
+    if (params.type !== 'GET' && !options.emulateJSON) {
+      params.processData = false;
+    }
+
+    var success = options.success;
+    options.success = function(resp, status, xhr) {
+      if (success) success(resp, status, xhr);
+      model.trigger('sync', model, resp, options);
+    };
+
+    var error = options.error;
+    options.error = function(xhr, status, thrown) {
+      if (error) error(model, xhr, options);
+      model.trigger('error', model, xhr, options);
+    };
+
+    // Make the request, allowing the user to override any Ajax options.
+    var xhr = Backbone.ajax(_.extend(params, options));
+    model.trigger('request', model, xhr, options);
+    return xhr;
+  };
+
+  // Set the default implementation of `Backbone.ajax` to proxy through to `$`.
+  Backbone.ajax = function() {
+    return Backbone.$.ajax.apply(Backbone.$, arguments);
+  };
+
+  // Helpers
+  // -------
+
+  // Helper function to correctly set up the prototype chain, for subclasses.
+  // Similar to `goog.inherits`, but uses a hash of prototype properties and
+  // class properties to be extended.
+  var extend = function(protoProps, staticProps) {
+    var parent = this;
+    var child;
+
+    // The constructor function for the new subclass is either defined by you
+    // (the "constructor" property in your `extend` definition), or defaulted
+    // by us to simply call the parent's constructor.
+    if (protoProps && _.has(protoProps, 'constructor')) {
+      child = protoProps.constructor;
+    } else {
+      child = function(){ parent.apply(this, arguments); };
+    }
+
+    // Add static properties to the constructor function, if supplied.
+    _.extend(child, parent, staticProps);
+
+    // Set the prototype chain to inherit from `parent`, without calling
+    // `parent`'s constructor function.
+    var Surrogate = function(){ this.constructor = child; };
+    Surrogate.prototype = parent.prototype;
+    child.prototype = new Surrogate;
+
+    // Add prototype properties (instance properties) to the subclass,
+    // if supplied.
+    if (protoProps) _.extend(child.prototype, protoProps);
+
+    // Set a convenience property in case the parent's prototype is needed
+    // later.
+    child.__super__ = parent.prototype;
+
+    return child;
+  };
+
+  // Set up inheritance for the model, collection, router, view and history.
+  Model.extend = Collection.extend = Router.extend = View.extend = History.extend = extend;
+
+  // Throw an error when a URL is needed, and none is supplied.
+  var urlError = function() {
+    throw new Error('A "url" property or function must be specified');
+  };
+
+}).call(this);
diff --git a/frontend/js/lib/jquery.js b/frontend/js/lib/jquery.js
new file mode 100644
index 0000000..a86bf79
--- /dev/null
+++ b/frontend/js/lib/jquery.js
@@ -0,0 +1,9472 @@
+/*!
+ * jQuery JavaScript Library v1.8.3
+ * http://jquery.com/
+ *
+ * Includes Sizzle.js
+ * http://sizzlejs.com/
+ *
+ * Copyright 2012 jQuery Foundation and other contributors
+ * Released under the MIT license
+ * http://jquery.org/license
+ *
+ * Date: Tue Nov 13 2012 08:20:33 GMT-0500 (Eastern Standard Time)
+ */
+(function( window, undefined ) {
+var
+	// A central reference to the root jQuery(document)
+	rootjQuery,
+
+	// The deferred used on DOM ready
+	readyList,
+
+	// Use the correct document accordingly with window argument (sandbox)
+	document = window.document,
+	location = window.location,
+	navigator = window.navigator,
+
+	// Map over jQuery in case of overwrite
+	_jQuery = window.jQuery,
+
+	// Map over the $ in case of overwrite
+	_$ = window.$,
+
+	// Save a reference to some core methods
+	core_push = Array.prototype.push,
+	core_slice = Array.prototype.slice,
+	core_indexOf = Array.prototype.indexOf,
+	core_toString = Object.prototype.toString,
+	core_hasOwn = Object.prototype.hasOwnProperty,
+	core_trim = String.prototype.trim,
+
+	// Define a local copy of jQuery
+	jQuery = function( selector, context ) {
+		// The jQuery object is actually just the init constructor 'enhanced'
+		return new jQuery.fn.init( selector, context, rootjQuery );
+	},
+
+	// Used for matching numbers
+	core_pnum = /[\-+]?(?:\d*\.|)\d+(?:[eE][\-+]?\d+|)/.source,
+
+	// Used for detecting and trimming whitespace
+	core_rnotwhite = /\S/,
+	core_rspace = /\s+/,
+
+	// Make sure we trim BOM and NBSP (here's looking at you, Safari 5.0 and IE)
+	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,
+
+	// A simple way to check for HTML strings
+	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
+	rquickExpr = /^(?:[^#<]*(<[\w\W]+>)[^>]*$|#([\w\-]*)$)/,
+
+	// Match a standalone tag
+	rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>|)$/,
+
+	// JSON RegExp
+	rvalidchars = /^[\],:{}\s]*$/,
+	rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g,
+	rvalidescape = /\\(?:["\\\/bfnrt]|u[\da-fA-F]{4})/g,
+	rvalidtokens = /"[^"\\\r\n]*"|true|false|null|-?(?:\d\d*\.|)\d+(?:[eE][\-+]?\d+|)/g,
+
+	// Matches dashed string for camelizing
+	rmsPrefix = /^-ms-/,
+	rdashAlpha = /-([\da-z])/gi,
+
+	// Used by jQuery.camelCase as callback to replace()
+	fcamelCase = function( all, letter ) {
+		return ( letter + "" ).toUpperCase();
+	},
+
+	// The ready event handler and self cleanup method
+	DOMContentLoaded = function() {
+		if ( document.addEventListener ) {
+			document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
+			jQuery.ready();
+		} else if ( document.readyState === "complete" ) {
+			// we're here because readyState === "complete" in oldIE
+			// which is good enough for us to call the dom ready!
+			document.detachEvent( "onreadystatechange", DOMContentLoaded );
+			jQuery.ready();
+		}
+	},
+
+	// [[Class]] -> type pairs
+	class2type = {};
+
+jQuery.fn = jQuery.prototype = {
+	constructor: jQuery,
+	init: function( selector, context, rootjQuery ) {
+		var match, elem, ret, doc;
+
+		// Handle $(""), $(null), $(undefined), $(false)
+		if ( !selector ) {
+			return this;
+		}
+
+		// Handle $(DOMElement)
+		if ( selector.nodeType ) {
+			this.context = this[0] = selector;
+			this.length = 1;
+			return this;
+		}
+
+		// Handle HTML strings
+		if ( typeof selector === "string" ) {
+			if ( selector.charAt(0) === "<" && selector.charAt( selector.length - 1 ) === ">" && selector.length >= 3 ) {
+				// Assume that strings that start and end with <> are HTML and skip the regex check
+				match = [ null, selector, null ];
+
+			} else {
+				match = rquickExpr.exec( selector );
+			}
+
+			// Match html or make sure no context is specified for #id
+			if ( match && (match[1] || !context) ) {
+
+				// HANDLE: $(html) -> $(array)
+				if ( match[1] ) {
+					context = context instanceof jQuery ? context[0] : context;
+					doc = ( context && context.nodeType ? context.ownerDocument || context : document );
+
+					// scripts is true for back-compat
+					selector = jQuery.parseHTML( match[1], doc, true );
+					if ( rsingleTag.test( match[1] ) && jQuery.isPlainObject( context ) ) {
+						this.attr.call( selector, context, true );
+					}
+
+					return jQuery.merge( this, selector );
+
+				// HANDLE: $(#id)
+				} else {
+					elem = document.getElementById( match[2] );
+
+					// Check parentNode to catch when Blackberry 4.6 returns
+					// nodes that are no longer in the document #6963
+					if ( elem && elem.parentNode ) {
+						// Handle the case where IE and Opera return items
+						// by name instead of ID
+						if ( elem.id !== match[2] ) {
+							return rootjQuery.find( selector );
+						}
+
+						// Otherwise, we inject the element directly into the jQuery object
+						this.length = 1;
+						this[0] = elem;
+					}
+
+					this.context = document;
+					this.selector = selector;
+					return this;
+				}
+
+			// HANDLE: $(expr, $(...))
+			} else if ( !context || context.jquery ) {
+				return ( context || rootjQuery ).find( selector );
+
+			// HANDLE: $(expr, context)
+			// (which is just equivalent to: $(context).find(expr)
+			} else {
+				return this.constructor( context ).find( selector );
+			}
+
+		// HANDLE: $(function)
+		// Shortcut for document ready
+		} else if ( jQuery.isFunction( selector ) ) {
+			return rootjQuery.ready( selector );
+		}
+
+		if ( selector.selector !== undefined ) {
+			this.selector = selector.selector;
+			this.context = selector.context;
+		}
+
+		return jQuery.makeArray( selector, this );
+	},
+
+	// Start with an empty selector
+	selector: "",
+
+	// The current version of jQuery being used
+	jquery: "1.8.3",
+
+	// The default length of a jQuery object is 0
+	length: 0,
+
+	// The number of elements contained in the matched element set
+	size: function() {
+		return this.length;
+	},
+
+	toArray: function() {
+		return core_slice.call( this );
+	},
+
+	// Get the Nth element in the matched element set OR
+	// Get the whole matched element set as a clean array
+	get: function( num ) {
+		return num == null ?
+
+			// Return a 'clean' array
+			this.toArray() :
+
+			// Return just the object
+			( num < 0 ? this[ this.length + num ] : this[ num ] );
+	},
+
+	// Take an array of elements and push it onto the stack
+	// (returning the new matched element set)
+	pushStack: function( elems, name, selector ) {
+
+		// Build a new jQuery matched element set
+		var ret = jQuery.merge( this.constructor(), elems );
+
+		// Add the old object onto the stack (as a reference)
+		ret.prevObject = this;
+
+		ret.context = this.context;
+
+		if ( name === "find" ) {
+			ret.selector = this.selector + ( this.selector ? " " : "" ) + selector;
+		} else if ( name ) {
+			ret.selector = this.selector + "." + name + "(" + selector + ")";
+		}
+
+		// Return the newly-formed element set
+		return ret;
+	},
+
+	// Execute a callback for every element in the matched set.
+	// (You can seed the arguments with an array of args, but this is
+	// only used internally.)
+	each: function( callback, args ) {
+		return jQuery.each( this, callback, args );
+	},
+
+	ready: function( fn ) {
+		// Add the callback
+		jQuery.ready.promise().done( fn );
+
+		return this;
+	},
+
+	eq: function( i ) {
+		i = +i;
+		return i === -1 ?
+			this.slice( i ) :
+			this.slice( i, i + 1 );
+	},
+
+	first: function() {
+		return this.eq( 0 );
+	},
+
+	last: function() {
+		return this.eq( -1 );
+	},
+
+	slice: function() {
+		return this.pushStack( core_slice.apply( this, arguments ),
+			"slice", core_slice.call(arguments).join(",") );
+	},
+
+	map: function( callback ) {
+		return this.pushStack( jQuery.map(this, function( elem, i ) {
+			return callback.call( elem, i, elem );
+		}));
+	},
+
+	end: function() {
+		return this.prevObject || this.constructor(null);
+	},
+
+	// For internal use only.
+	// Behaves like an Array's method, not like a jQuery method.
+	push: core_push,
+	sort: [].sort,
+	splice: [].splice
+};
+
+// Give the init function the jQuery prototype for later instantiation
+jQuery.fn.init.prototype = jQuery.fn;
+
+jQuery.extend = jQuery.fn.extend = function() {
+	var options, name, src, copy, copyIsArray, clone,
+		target = arguments[0] || {},
+		i = 1,
+		length = arguments.length,
+		deep = false;
+
+	// Handle a deep copy situation
+	if ( typeof target === "boolean" ) {
+		deep = target;
+		target = arguments[1] || {};
+		// skip the boolean and the target
+		i = 2;
+	}
+
+	// Handle case when target is a string or something (possible in deep copy)
+	if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
+		target = {};
+	}
+
+	// extend jQuery itself if only one argument is passed
+	if ( length === i ) {
+		target = this;
+		--i;
+	}
+
+	for ( ; i < length; i++ ) {
+		// Only deal with non-null/undefined values
+		if ( (options = arguments[ i ]) != null ) {
+			// Extend the base object
+			for ( name in options ) {
+				src = target[ name ];
+				copy = options[ name ];
+
+				// Prevent never-ending loop
+				if ( target === copy ) {
+					continue;
+				}
+
+				// Recurse if we're merging plain objects or arrays
+				if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
+					if ( copyIsArray ) {
+						copyIsArray = false;
+						clone = src && jQuery.isArray(src) ? src : [];
+
+					} else {
+						clone = src && jQuery.isPlainObject(src) ? src : {};
+					}
+
+					// Never move original objects, clone them
+					target[ name ] = jQuery.extend( deep, clone, copy );
+
+				// Don't bring in undefined values
+				} else if ( copy !== undefined ) {
+					target[ name ] = copy;
+				}
+			}
+		}
+	}
+
+	// Return the modified object
+	return target;
+};
+
+jQuery.extend({
+	noConflict: function( deep ) {
+		if ( window.$ === jQuery ) {
+			window.$ = _$;
+		}
+
+		if ( deep && window.jQuery === jQuery ) {
+			window.jQuery = _jQuery;
+		}
+
+		return jQuery;
+	},
+
+	// Is the DOM ready to be used? Set to true once it occurs.
+	isReady: false,
+
+	// A counter to track how many items to wait for before
+	// the ready event fires. See #6781
+	readyWait: 1,
+
+	// Hold (or release) the ready event
+	holdReady: function( hold ) {
+		if ( hold ) {
+			jQuery.readyWait++;
+		} else {
+			jQuery.ready( true );
+		}
+	},
+
+	// Handle when the DOM is ready
+	ready: function( wait ) {
+
+		// Abort if there are pending holds or we're already ready
+		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
+			return;
+		}
+
+		// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
+		if ( !document.body ) {
+			return setTimeout( jQuery.ready, 1 );
+		}
+
+		// Remember that the DOM is ready
+		jQuery.isReady = true;
+
+		// If a normal DOM Ready event fired, decrement, and wait if need be
+		if ( wait !== true && --jQuery.readyWait > 0 ) {
+			return;
+		}
+
+		// If there are functions bound, to execute
+		readyList.resolveWith( document, [ jQuery ] );
+
+		// Trigger any bound ready events
+		if ( jQuery.fn.trigger ) {
+			jQuery( document ).trigger("ready").off("ready");
+		}
+	},
+
+	// See test/unit/core.js for details concerning isFunction.
+	// Since version 1.3, DOM methods and functions like alert
+	// aren't supported. They return false on IE (#2968).
+	isFunction: function( obj ) {
+		return jQuery.type(obj) === "function";
+	},
+
+	isArray: Array.isArray || function( obj ) {
+		return jQuery.type(obj) === "array";
+	},
+
+	isWindow: function( obj ) {
+		return obj != null && obj == obj.window;
+	},
+
+	isNumeric: function( obj ) {
+		return !isNaN( parseFloat(obj) ) && isFinite( obj );
+	},
+
+	type: function( obj ) {
+		return obj == null ?
+			String( obj ) :
+			class2type[ core_toString.call(obj) ] || "object";
+	},
+
+	isPlainObject: function( obj ) {
+		// Must be an Object.
+		// Because of IE, we also have to check the presence of the constructor property.
+		// Make sure that DOM nodes and window objects don't pass through, as well
+		if ( !obj || jQuery.type(obj) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
+			return false;
+		}
+
+		try {
+			// Not own constructor property must be Object
+			if ( obj.constructor &&
+				!core_hasOwn.call(obj, "constructor") &&
+				!core_hasOwn.call(obj.constructor.prototype, "isPrototypeOf") ) {
+				return false;
+			}
+		} catch ( e ) {
+			// IE8,9 Will throw exceptions on certain host objects #9897
+			return false;
+		}
+
+		// Own properties are enumerated firstly, so to speed up,
+		// if last one is own, then all properties are own.
+
+		var key;
+		for ( key in obj ) {}
+
+		return key === undefined || core_hasOwn.call( obj, key );
+	},
+
+	isEmptyObject: function( obj ) {
+		var name;
+		for ( name in obj ) {
+			return false;
+		}
+		return true;
+	},
+
+	error: function( msg ) {
+		throw new Error( msg );
+	},
+
+	// data: string of html
+	// context (optional): If specified, the fragment will be created in this context, defaults to document
+	// scripts (optional): If true, will include scripts passed in the html string
+	parseHTML: function( data, context, scripts ) {
+		var parsed;
+		if ( !data || typeof data !== "string" ) {
+			return null;
+		}
+		if ( typeof context === "boolean" ) {
+			scripts = context;
+			context = 0;
+		}
+		context = context || document;
+
+		// Single tag
+		if ( (parsed = rsingleTag.exec( data )) ) {
+			return [ context.createElement( parsed[1] ) ];
+		}
+
+		parsed = jQuery.buildFragment( [ data ], context, scripts ? null : [] );
+		return jQuery.merge( [],
+			(parsed.cacheable ? jQuery.clone( parsed.fragment ) : parsed.fragment).childNodes );
+	},
+
+	parseJSON: function( data ) {
+		if ( !data || typeof data !== "string") {
+			return null;
+		}
+
+		// Make sure leading/trailing whitespace is removed (IE can't handle it)
+		data = jQuery.trim( data );
+
+		// Attempt to parse using the native JSON parser first
+		if ( window.JSON && window.JSON.parse ) {
+			return window.JSON.parse( data );
+		}
+
+		// Make sure the incoming data is actual JSON
+		// Logic borrowed from http://json.org/json2.js
+		if ( rvalidchars.test( data.replace( rvalidescape, "@" )
+			.replace( rvalidtokens, "]" )
+			.replace( rvalidbraces, "")) ) {
+
+			return ( new Function( "return " + data ) )();
+
+		}
+		jQuery.error( "Invalid JSON: " + data );
+	},
+
+	// Cross-browser xml parsing
+	parseXML: function( data ) {
+		var xml, tmp;
+		if ( !data || typeof data !== "string" ) {
+			return null;
+		}
+		try {
+			if ( window.DOMParser ) { // Standard
+				tmp = new DOMParser();
+				xml = tmp.parseFromString( data , "text/xml" );
+			} else { // IE
+				xml = new ActiveXObject( "Microsoft.XMLDOM" );
+				xml.async = "false";
+				xml.loadXML( data );
+			}
+		} catch( e ) {
+			xml = undefined;
+		}
+		if ( !xml || !xml.documentElement || xml.getElementsByTagName( "parsererror" ).length ) {
+			jQuery.error( "Invalid XML: " + data );
+		}
+		return xml;
+	},
+
+	noop: function() {},
+
+	// Evaluates a script in a global context
+	// Workarounds based on findings by Jim Driscoll
+	// http://weblogs.java.net/blog/driscoll/archive/2009/09/08/eval-javascript-global-context
+	globalEval: function( data ) {
+		if ( data && core_rnotwhite.test( data ) ) {
+			// We use execScript on Internet Explorer
+			// We use an anonymous function so that context is window
+			// rather than jQuery in Firefox
+			( window.execScript || function( data ) {
+				window[ "eval" ].call( window, data );
+			} )( data );
+		}
+	},
+
+	// Convert dashed to camelCase; used by the css and data modules
+	// Microsoft forgot to hump their vendor prefix (#9572)
+	camelCase: function( string ) {
+		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
+	},
+
+	nodeName: function( elem, name ) {
+		return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
+	},
+
+	// args is for internal usage only
+	each: function( obj, callback, args ) {
+		var name,
+			i = 0,
+			length = obj.length,
+			isObj = length === undefined || jQuery.isFunction( obj );
+
+		if ( args ) {
+			if ( isObj ) {
+				for ( name in obj ) {
+					if ( callback.apply( obj[ name ], args ) === false ) {
+						break;
+					}
+				}
+			} else {
+				for ( ; i < length; ) {
+					if ( callback.apply( obj[ i++ ], args ) === false ) {
+						break;
+					}
+				}
+			}
+
+		// A special, fast, case for the most common use of each
+		} else {
+			if ( isObj ) {
+				for ( name in obj ) {
+					if ( callback.call( obj[ name ], name, obj[ name ] ) === false ) {
+						break;
+					}
+				}
+			} else {
+				for ( ; i < length; ) {
+					if ( callback.call( obj[ i ], i, obj[ i++ ] ) === false ) {
+						break;
+					}
+				}
+			}
+		}
+
+		return obj;
+	},
+
+	// Use native String.trim function wherever possible
+	trim: core_trim && !core_trim.call("\uFEFF\xA0") ?
+		function( text ) {
+			return text == null ?
+				"" :
+				core_trim.call( text );
+		} :
+
+		// Otherwise use our own trimming functionality
+		function( text ) {
+			return text == null ?
+				"" :
+				( text + "" ).replace( rtrim, "" );
+		},
+
+	// results is for internal usage only
+	makeArray: function( arr, results ) {
+		var type,
+			ret = results || [];
+
+		if ( arr != null ) {
+			// The window, strings (and functions) also have 'length'
+			// Tweaked logic slightly to handle Blackberry 4.7 RegExp issues #6930
+			type = jQuery.type( arr );
+
+			if ( arr.length == null || type === "string" || type === "function" || type === "regexp" || jQuery.isWindow( arr ) ) {
+				core_push.call( ret, arr );
+			} else {
+				jQuery.merge( ret, arr );
+			}
+		}
+
+		return ret;
+	},
+
+	inArray: function( elem, arr, i ) {
+		var len;
+
+		if ( arr ) {
+			if ( core_indexOf ) {
+				return core_indexOf.call( arr, elem, i );
+			}
+
+			len = arr.length;
+			i = i ? i < 0 ? Math.max( 0, len + i ) : i : 0;
+
+			for ( ; i < len; i++ ) {
+				// Skip accessing in sparse arrays
+				if ( i in arr && arr[ i ] === elem ) {
+					return i;
+				}
+			}
+		}
+
+		return -1;
+	},
+
+	merge: function( first, second ) {
+		var l = second.length,
+			i = first.length,
+			j = 0;
+
+		if ( typeof l === "number" ) {
+			for ( ; j < l; j++ ) {
+				first[ i++ ] = second[ j ];
+			}
+
+		} else {
+			while ( second[j] !== undefined ) {
+				first[ i++ ] = second[ j++ ];
+			}
+		}
+
+		first.length = i;
+
+		return first;
+	},
+
+	grep: function( elems, callback, inv ) {
+		var retVal,
+			ret = [],
+			i = 0,
+			length = elems.length;
+		inv = !!inv;
+
+		// Go through the array, only saving the items
+		// that pass the validator function
+		for ( ; i < length; i++ ) {
+			retVal = !!callback( elems[ i ], i );
+			if ( inv !== retVal ) {
+				ret.push( elems[ i ] );
+			}
+		}
+
+		return ret;
+	},
+
+	// arg is for internal usage only
+	map: function( elems, callback, arg ) {
+		var value, key,
+			ret = [],
+			i = 0,
+			length = elems.length,
+			// jquery objects are treated as arrays
+			isArray = elems instanceof jQuery || length !== undefined && typeof length === "number" && ( ( length > 0 && elems[ 0 ] && elems[ length -1 ] ) || length === 0 || jQuery.isArray( elems ) ) ;
+
+		// Go through the array, translating each of the items to their
+		if ( isArray ) {
+			for ( ; i < length; i++ ) {
+				value = callback( elems[ i ], i, arg );
+
+				if ( value != null ) {
+					ret[ ret.length ] = value;
+				}
+			}
+
+		// Go through every key on the object,
+		} else {
+			for ( key in elems ) {
+				value = callback( elems[ key ], key, arg );
+
+				if ( value != null ) {
+					ret[ ret.length ] = value;
+				}
+			}
+		}
+
+		// Flatten any nested arrays
+		return ret.concat.apply( [], ret );
+	},
+
+	// A global GUID counter for objects
+	guid: 1,
+
+	// Bind a function to a context, optionally partially applying any
+	// arguments.
+	proxy: function( fn, context ) {
+		var tmp, args, proxy;
+
+		if ( typeof context === "string" ) {
+			tmp = fn[ context ];
+			context = fn;
+			fn = tmp;
+		}
+
+		// Quick check to determine if target is callable, in the spec
+		// this throws a TypeError, but we will just return undefined.
+		if ( !jQuery.isFunction( fn ) ) {
+			return undefined;
+		}
+
+		// Simulated bind
+		args = core_slice.call( arguments, 2 );
+		proxy = function() {
+			return fn.apply( context, args.concat( core_slice.call( arguments ) ) );
+		};
+
+		// Set the guid of unique handler to the same of original handler, so it can be removed
+		proxy.guid = fn.guid = fn.guid || jQuery.guid++;
+
+		return proxy;
+	},
+
+	// Multifunctional method to get and set values of a collection
+	// The value/s can optionally be executed if it's a function
+	access: function( elems, fn, key, value, chainable, emptyGet, pass ) {
+		var exec,
+			bulk = key == null,
+			i = 0,
+			length = elems.length;
+
+		// Sets many values
+		if ( key && typeof key === "object" ) {
+			for ( i in key ) {
+				jQuery.access( elems, fn, i, key[i], 1, emptyGet, value );
+			}
+			chainable = 1;
+
+		// Sets one value
+		} else if ( value !== undefined ) {
+			// Optionally, function values get executed if exec is true
+			exec = pass === undefined && jQuery.isFunction( value );
+
+			if ( bulk ) {
+				// Bulk operations only iterate when executing function values
+				if ( exec ) {
+					exec = fn;
+					fn = function( elem, key, value ) {
+						return exec.call( jQuery( elem ), value );
+					};
+
+				// Otherwise they run against the entire set
+				} else {
+					fn.call( elems, value );
+					fn = null;
+				}
+			}
+
+			if ( fn ) {
+				for (; i < length; i++ ) {
+					fn( elems[i], key, exec ? value.call( elems[i], i, fn( elems[i], key ) ) : value, pass );
+				}
+			}
+
+			chainable = 1;
+		}
+
+		return chainable ?
+			elems :
+
+			// Gets
+			bulk ?
+				fn.call( elems ) :
+				length ? fn( elems[0], key ) : emptyGet;
+	},
+
+	now: function() {
+		return ( new Date() ).getTime();
+	}
+});
+
+jQuery.ready.promise = function( obj ) {
+	if ( !readyList ) {
+
+		readyList = jQuery.Deferred();
+
+		// Catch cases where $(document).ready() is called after the browser event has already occurred.
+		// we once tried to use readyState "interactive" here, but it caused issues like the one
+		// discovered by ChrisS here: http://bugs.jquery.com/ticket/12282#comment:15
+		if ( document.readyState === "complete" ) {
+			// Handle it asynchronously to allow scripts the opportunity to delay ready
+			setTimeout( jQuery.ready, 1 );
+
+		// Standards-based browsers support DOMContentLoaded
+		} else if ( document.addEventListener ) {
+			// Use the handy event callback
+			document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false );
+
+			// A fallback to window.onload, that will always work
+			window.addEventListener( "load", jQuery.ready, false );
+
+		// If IE event model is used
+		} else {
+			// Ensure firing before onload, maybe late but safe also for iframes
+			document.attachEvent( "onreadystatechange", DOMContentLoaded );
+
+			// A fallback to window.onload, that will always work
+			window.attachEvent( "onload", jQuery.ready );
+
+			// If IE and not a frame
+			// continually check to see if the document is ready
+			var top = false;
+
+			try {
+				top = window.frameElement == null && document.documentElement;
+			} catch(e) {}
+
+			if ( top && top.doScroll ) {
+				(function doScrollCheck() {
+					if ( !jQuery.isReady ) {
+
+						try {
+							// Use the trick by Diego Perini
+							// http://javascript.nwbox.com/IEContentLoaded/
+							top.doScroll("left");
+						} catch(e) {
+							return setTimeout( doScrollCheck, 50 );
+						}
+
+						// and execute any waiting functions
+						jQuery.ready();
+					}
+				})();
+			}
+		}
+	}
+	return readyList.promise( obj );
+};
+
+// Populate the class2type map
+jQuery.each("Boolean Number String Function Array Date RegExp Object".split(" "), function(i, name) {
+	class2type[ "[object " + name + "]" ] = name.toLowerCase();
+});
+
+// All jQuery objects should point back to these
+rootjQuery = jQuery(document);
+// String to Object options format cache
+var optionsCache = {};
+
+// Convert String-formatted options into Object-formatted ones and store in cache
+function createOptions( options ) {
+	var object = optionsCache[ options ] = {};
+	jQuery.each( options.split( core_rspace ), function( _, flag ) {
+		object[ flag ] = true;
+	});
+	return object;
+}
+
+/*
+ * Create a callback list using the following parameters:
+ *
+ *	options: an optional list of space-separated options that will change how
+ *			the callback list behaves or a more traditional option object
+ *
+ * By default a callback list will act like an event callback list and can be
+ * "fired" multiple times.
+ *
+ * Possible options:
+ *
+ *	once:			will ensure the callback list can only be fired once (like a Deferred)
+ *
+ *	memory:			will keep track of previous values and will call any callback added
+ *					after the list has been fired right away with the latest "memorized"
+ *					values (like a Deferred)
+ *
+ *	unique:			will ensure a callback can only be added once (no duplicate in the list)
+ *
+ *	stopOnFalse:	interrupt callings when a callback returns false
+ *
+ */
+jQuery.Callbacks = function( options ) {
+
+	// Convert options from String-formatted to Object-formatted if needed
+	// (we check in cache first)
+	options = typeof options === "string" ?
+		( optionsCache[ options ] || createOptions( options ) ) :
+		jQuery.extend( {}, options );
+
+	var // Last fire value (for non-forgettable lists)
+		memory,
+		// Flag to know if list was already fired
+		fired,
+		// Flag to know if list is currently firing
+		firing,
+		// First callback to fire (used internally by add and fireWith)
+		firingStart,
+		// End of the loop when firing
+		firingLength,
+		// Index of currently firing callback (modified by remove if needed)
+		firingIndex,
+		// Actual callback list
+		list = [],
+		// Stack of fire calls for repeatable lists
+		stack = !options.once && [],
+		// Fire callbacks
+		fire = function( data ) {
+			memory = options.memory && data;
+			fired = true;
+			firingIndex = firingStart || 0;
+			firingStart = 0;
+			firingLength = list.length;
+			firing = true;
+			for ( ; list && firingIndex < firingLength; firingIndex++ ) {
+				if ( list[ firingIndex ].apply( data[ 0 ], data[ 1 ] ) === false && options.stopOnFalse ) {
+					memory = false; // To prevent further calls using add
+					break;
+				}
+			}
+			firing = false;
+			if ( list ) {
+				if ( stack ) {
+					if ( stack.length ) {
+						fire( stack.shift() );
+					}
+				} else if ( memory ) {
+					list = [];
+				} else {
+					self.disable();
+				}
+			}
+		},
+		// Actual Callbacks object
+		self = {
+			// Add a callback or a collection of callbacks to the list
+			add: function() {
+				if ( list ) {
+					// First, we save the current length
+					var start = list.length;
+					(function add( args ) {
+						jQuery.each( args, function( _, arg ) {
+							var type = jQuery.type( arg );
+							if ( type === "function" ) {
+								if ( !options.unique || !self.has( arg ) ) {
+									list.push( arg );
+								}
+							} else if ( arg && arg.length && type !== "string" ) {
+								// Inspect recursively
+								add( arg );
+							}
+						});
+					})( arguments );
+					// Do we need to add the callbacks to the
+					// current firing batch?
+					if ( firing ) {
+						firingLength = list.length;
+					// With memory, if we're not firing then
+					// we should call right away
+					} else if ( memory ) {
+						firingStart = start;
+						fire( memory );
+					}
+				}
+				return this;
+			},
+			// Remove a callback from the list
+			remove: function() {
+				if ( list ) {
+					jQuery.each( arguments, function( _, arg ) {
+						var index;
+						while( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
+							list.splice( index, 1 );
+							// Handle firing indexes
+							if ( firing ) {
+								if ( index <= firingLength ) {
+									firingLength--;
+								}
+								if ( index <= firingIndex ) {
+									firingIndex--;
+								}
+							}
+						}
+					});
+				}
+				return this;
+			},
+			// Control if a given callback is in the list
+			has: function( fn ) {
+				return jQuery.inArray( fn, list ) > -1;
+			},
+			// Remove all callbacks from the list
+			empty: function() {
+				list = [];
+				return this;
+			},
+			// Have the list do nothing anymore
+			disable: function() {
+				list = stack = memory = undefined;
+				return this;
+			},
+			// Is it disabled?
+			disabled: function() {
+				return !list;
+			},
+			// Lock the list in its current state
+			lock: function() {
+				stack = undefined;
+				if ( !memory ) {
+					self.disable();
+				}
+				return this;
+			},
+			// Is it locked?
+			locked: function() {
+				return !stack;
+			},
+			// Call all callbacks with the given context and arguments
+			fireWith: function( context, args ) {
+				args = args || [];
+				args = [ context, args.slice ? args.slice() : args ];
+				if ( list && ( !fired || stack ) ) {
+					if ( firing ) {
+						stack.push( args );
+					} else {
+						fire( args );
+					}
+				}
+				return this;
+			},
+			// Call all the callbacks with the given arguments
+			fire: function() {
+				self.fireWith( this, arguments );
+				return this;
+			},
+			// To know if the callbacks have already been called at least once
+			fired: function() {
+				return !!fired;
+			}
+		};
+
+	return self;
+};
+jQuery.extend({
+
+	Deferred: function( func ) {
+		var tuples = [
+				// action, add listener, listener list, final state
+				[ "resolve", "done", jQuery.Callbacks("once memory"), "resolved" ],
+				[ "reject", "fail", jQuery.Callbacks("once memory"), "rejected" ],
+				[ "notify", "progress", jQuery.Callbacks("memory") ]
+			],
+			state = "pending",
+			promise = {
+				state: function() {
+					return state;
+				},
+				always: function() {
+					deferred.done( arguments ).fail( arguments );
+					return this;
+				},
+				then: function( /* fnDone, fnFail, fnProgress */ ) {
+					var fns = arguments;
+					return jQuery.Deferred(function( newDefer ) {
+						jQuery.each( tuples, function( i, tuple ) {
+							var action = tuple[ 0 ],
+								fn = fns[ i ];
+							// deferred[ done | fail | progress ] for forwarding actions to newDefer
+							deferred[ tuple[1] ]( jQuery.isFunction( fn ) ?
+								function() {
+									var returned = fn.apply( this, arguments );
+									if ( returned && jQuery.isFunction( returned.promise ) ) {
+										returned.promise()
+											.done( newDefer.resolve )
+											.fail( newDefer.reject )
+											.progress( newDefer.notify );
+									} else {
+										newDefer[ action + "With" ]( this === deferred ? newDefer : this, [ returned ] );
+									}
+								} :
+								newDefer[ action ]
+							);
+						});
+						fns = null;
+					}).promise();
+				},
+				// Get a promise for this deferred
+				// If obj is provided, the promise aspect is added to the object
+				promise: function( obj ) {
+					return obj != null ? jQuery.extend( obj, promise ) : promise;
+				}
+			},
+			deferred = {};
+
+		// Keep pipe for back-compat
+		promise.pipe = promise.then;
+
+		// Add list-specific methods
+		jQuery.each( tuples, function( i, tuple ) {
+			var list = tuple[ 2 ],
+				stateString = tuple[ 3 ];
+
+			// promise[ done | fail | progress ] = list.add
+			promise[ tuple[1] ] = list.add;
+
+			// Handle state
+			if ( stateString ) {
+				list.add(function() {
+					// state = [ resolved | rejected ]
+					state = stateString;
+
+				// [ reject_list | resolve_list ].disable; progress_list.lock
+				}, tuples[ i ^ 1 ][ 2 ].disable, tuples[ 2 ][ 2 ].lock );
+			}
+
+			// deferred[ resolve | reject | notify ] = list.fire
+			deferred[ tuple[0] ] = list.fire;
+			deferred[ tuple[0] + "With" ] = list.fireWith;
+		});
+
+		// Make the deferred a promise
+		promise.promise( deferred );
+
+		// Call given func if any
+		if ( func ) {
+			func.call( deferred, deferred );
+		}
+
+		// All done!
+		return deferred;
+	},
+
+	// Deferred helper
+	when: function( subordinate /* , ..., subordinateN */ ) {
+		var i = 0,
+			resolveValues = core_slice.call( arguments ),
+			length = resolveValues.length,
+
+			// the count of uncompleted subordinates
+			remaining = length !== 1 || ( subordinate && jQuery.isFunction( subordinate.promise ) ) ? length : 0,
+
+			// the master Deferred. If resolveValues consist of only a single Deferred, just use that.
+			deferred = remaining === 1 ? subordinate : jQuery.Deferred(),
+
+			// Update function for both resolve and progress values
+			updateFunc = function( i, contexts, values ) {
+				return function( value ) {
+					contexts[ i ] = this;
+					values[ i ] = arguments.length > 1 ? core_slice.call( arguments ) : value;
+					if( values === progressValues ) {
+						deferred.notifyWith( contexts, values );
+					} else if ( !( --remaining ) ) {
+						deferred.resolveWith( contexts, values );
+					}
+				};
+			},
+
+			progressValues, progressContexts, resolveContexts;
+
+		// add listeners to Deferred subordinates; treat others as resolved
+		if ( length > 1 ) {
+			progressValues = new Array( length );
+			progressContexts = new Array( length );
+			resolveContexts = new Array( length );
+			for ( ; i < length; i++ ) {
+				if ( resolveValues[ i ] && jQuery.isFunction( resolveValues[ i ].promise ) ) {
+					resolveValues[ i ].promise()
+						.done( updateFunc( i, resolveContexts, resolveValues ) )
+						.fail( deferred.reject )
+						.progress( updateFunc( i, progressContexts, progressValues ) );
+				} else {
+					--remaining;
+				}
+			}
+		}
+
+		// if we're not waiting on anything, resolve the master
+		if ( !remaining ) {
+			deferred.resolveWith( resolveContexts, resolveValues );
+		}
+
+		return deferred.promise();
+	}
+});
+jQuery.support = (function() {
+
+	var support,
+		all,
+		a,
+		select,
+		opt,
+		input,
+		fragment,
+		eventName,
+		i,
+		isSupported,
+		clickFn,
+		div = document.createElement("div");
+
+	// Setup
+	div.setAttribute( "className", "t" );
+	div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
+
+	// Support tests won't run in some limited or non-browser environments
+	all = div.getElementsByTagName("*");
+	a = div.getElementsByTagName("a")[ 0 ];
+	if ( !all || !a || !all.length ) {
+		return {};
+	}
+
+	// First batch of tests
+	select = document.createElement("select");
+	opt = select.appendChild( document.createElement("option") );
+	input = div.getElementsByTagName("input")[ 0 ];
+
+	a.style.cssText = "top:1px;float:left;opacity:.5";
+	support = {
+		// IE strips leading whitespace when .innerHTML is used
+		leadingWhitespace: ( div.firstChild.nodeType === 3 ),
+
+		// Make sure that tbody elements aren't automatically inserted
+		// IE will insert them into empty tables
+		tbody: !div.getElementsByTagName("tbody").length,
+
+		// Make sure that link elements get serialized correctly by innerHTML
+		// This requires a wrapper element in IE
+		htmlSerialize: !!div.getElementsByTagName("link").length,
+
+		// Get the style information from getAttribute
+		// (IE uses .cssText instead)
+		style: /top/.test( a.getAttribute("style") ),
+
+		// Make sure that URLs aren't manipulated
+		// (IE normalizes it by default)
+		hrefNormalized: ( a.getAttribute("href") === "/a" ),
+
+		// Make sure that element opacity exists
+		// (IE uses filter instead)
+		// Use a regex to work around a WebKit issue. See #5145
+		opacity: /^0.5/.test( a.style.opacity ),
+
+		// Verify style float existence
+		// (IE uses styleFloat instead of cssFloat)
+		cssFloat: !!a.style.cssFloat,
+
+		// Make sure that if no value is specified for a checkbox
+		// that it defaults to "on".
+		// (WebKit defaults to "" instead)
+		checkOn: ( input.value === "on" ),
+
+		// Make sure that a selected-by-default option has a working selected property.
+		// (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
+		optSelected: opt.selected,
+
+		// Test setAttribute on camelCase class. If it works, we need attrFixes when doing get/setAttribute (ie6/7)
+		getSetAttribute: div.className !== "t",
+
+		// Tests for enctype support on a form (#6743)
+		enctype: !!document.createElement("form").enctype,
+
+		// Makes sure cloning an html5 element does not cause problems
+		// Where outerHTML is undefined, this still works
+		html5Clone: document.createElement("nav").cloneNode( true ).outerHTML !== "<:nav></:nav>",
+
+		// jQuery.support.boxModel DEPRECATED in 1.8 since we don't support Quirks Mode
+		boxModel: ( document.compatMode === "CSS1Compat" ),
+
+		// Will be defined later
+		submitBubbles: true,
+		changeBubbles: true,
+		focusinBubbles: false,
+		deleteExpando: true,
+		noCloneEvent: true,
+		inlineBlockNeedsLayout: false,
+		shrinkWrapBlocks: false,
+		reliableMarginRight: true,
+		boxSizingReliable: true,
+		pixelPosition: false
+	};
+
+	// Make sure checked status is properly cloned
+	input.checked = true;
+	support.noCloneChecked = input.cloneNode( true ).checked;
+
+	// Make sure that the options inside disabled selects aren't marked as disabled
+	// (WebKit marks them as disabled)
+	select.disabled = true;
+	support.optDisabled = !opt.disabled;
+
+	// Test to see if it's possible to delete an expando from an element
+	// Fails in Internet Explorer
+	try {
+		delete div.test;
+	} catch( e ) {
+		support.deleteExpando = false;
+	}
+
+	if ( !div.addEventListener && div.attachEvent && div.fireEvent ) {
+		div.attachEvent( "onclick", clickFn = function() {
+			// Cloning a node shouldn't copy over any
+			// bound event handlers (IE does this)
+			support.noCloneEvent = false;
+		});
+		div.cloneNode( true ).fireEvent("onclick");
+		div.detachEvent( "onclick", clickFn );
+	}
+
+	// Check if a radio maintains its value
+	// after being appended to the DOM
+	input = document.createElement("input");
+	input.value = "t";
+	input.setAttribute( "type", "radio" );
+	support.radioValue = input.value === "t";
+
+	input.setAttribute( "checked", "checked" );
+
+	// #11217 - WebKit loses check when the name is after the checked attribute
+	input.setAttribute( "name", "t" );
+
+	div.appendChild( input );
+	fragment = document.createDocumentFragment();
+	fragment.appendChild( div.lastChild );
+
+	// WebKit doesn't clone checked state correctly in fragments
+	support.checkClone = fragment.cloneNode( true ).cloneNode( true ).lastChild.checked;
+
+	// Check if a disconnected checkbox will retain its checked
+	// value of true after appended to the DOM (IE6/7)
+	support.appendChecked = input.checked;
+
+	fragment.removeChild( input );
+	fragment.appendChild( div );
+
+	// Technique from Juriy Zaytsev
+	// http://perfectionkills.com/detecting-event-support-without-browser-sniffing/
+	// We only care about the case where non-standard event systems
+	// are used, namely in IE. Short-circuiting here helps us to
+	// avoid an eval call (in setAttribute) which can cause CSP
+	// to go haywire. See: https://developer.mozilla.org/en/Security/CSP
+	if ( div.attachEvent ) {
+		for ( i in {
+			submit: true,
+			change: true,
+			focusin: true
+		}) {
+			eventName = "on" + i;
+			isSupported = ( eventName in div );
+			if ( !isSupported ) {
+				div.setAttribute( eventName, "return;" );
+				isSupported = ( typeof div[ eventName ] === "function" );
+			}
+			support[ i + "Bubbles" ] = isSupported;
+		}
+	}
+
+	// Run tests that need a body at doc ready
+	jQuery(function() {
+		var container, div, tds, marginDiv,
+			divReset = "padding:0;margin:0;border:0;display:block;overflow:hidden;",
+			body = document.getElementsByTagName("body")[0];
+
+		if ( !body ) {
+			// Return for frameset docs that don't have a body
+			return;
+		}
+
+		container = document.createElement("div");
+		container.style.cssText = "visibility:hidden;border:0;width:0;height:0;position:static;top:0;margin-top:1px";
+		body.insertBefore( container, body.firstChild );
+
+		// Construct the test element
+		div = document.createElement("div");
+		container.appendChild( div );
+
+		// Check if table cells still have offsetWidth/Height when they are set
+		// to display:none and there are still other visible table cells in a
+		// table row; if so, offsetWidth/Height are not reliable for use when
+		// determining if an element has been hidden directly using
+		// display:none (it is still safe to use offsets if a parent element is
+		// hidden; don safety goggles and see bug #4512 for more information).
+		// (only IE 8 fails this test)
+		div.innerHTML = "<table><tr><td></td><td>t</td></tr></table>";
+		tds = div.getElementsByTagName("td");
+		tds[ 0 ].style.cssText = "padding:0;margin:0;border:0;display:none";
+		isSupported = ( tds[ 0 ].offsetHeight === 0 );
+
+		tds[ 0 ].style.display = "";
+		tds[ 1 ].style.display = "none";
+
+		// Check if empty table cells still have offsetWidth/Height
+		// (IE <= 8 fail this test)
+		support.reliableHiddenOffsets = isSupported && ( tds[ 0 ].offsetHeight === 0 );
+
+		// Check box-sizing and margin behavior
+		div.innerHTML = "";
+		div.style.cssText = "box-sizing:border-box;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;position:absolute;top:1%;";
+		support.boxSizing = ( div.offsetWidth === 4 );
+		support.doesNotIncludeMarginInBodyOffset = ( body.offsetTop !== 1 );
+
+		// NOTE: To any future maintainer, we've window.getComputedStyle
+		// because jsdom on node.js will break without it.
+		if ( window.getComputedStyle ) {
+			support.pixelPosition = ( window.getComputedStyle( div, null ) || {} ).top !== "1%";
+			support.boxSizingReliable = ( window.getComputedStyle( div, null ) || { width: "4px" } ).width === "4px";
+
+			// Check if div with explicit width and no margin-right incorrectly
+			// gets computed margin-right based on width of container. For more
+			// info see bug #3333
+			// Fails in WebKit before Feb 2011 nightlies
+			// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
+			marginDiv = document.createElement("div");
+			marginDiv.style.cssText = div.style.cssText = divReset;
+			marginDiv.style.marginRight = marginDiv.style.width = "0";
+			div.style.width = "1px";
+			div.appendChild( marginDiv );
+			support.reliableMarginRight =
+				!parseFloat( ( window.getComputedStyle( marginDiv, null ) || {} ).marginRight );
+		}
+
+		if ( typeof div.style.zoom !== "undefined" ) {
+			// Check if natively block-level elements act like inline-block
+			// elements when setting their display to 'inline' and giving
+			// them layout
+			// (IE < 8 does this)
+			div.innerHTML = "";
+			div.style.cssText = divReset + "width:1px;padding:1px;display:inline;zoom:1";
+			support.inlineBlockNeedsLayout = ( div.offsetWidth === 3 );
+
+			// Check if elements with layout shrink-wrap their children
+			// (IE 6 does this)
+			div.style.display = "block";
+			div.style.overflow = "visible";
+			div.innerHTML = "<div></div>";
+			div.firstChild.style.width = "5px";
+			support.shrinkWrapBlocks = ( div.offsetWidth !== 3 );
+
+			container.style.zoom = 1;
+		}
+
+		// Null elements to avoid leaks in IE
+		body.removeChild( container );
+		container = div = tds = marginDiv = null;
+	});
+
+	// Null elements to avoid leaks in IE
+	fragment.removeChild( div );
+	all = a = select = opt = input = fragment = div = null;
+
+	return support;
+})();
+var rbrace = /(?:\{[\s\S]*\}|\[[\s\S]*\])$/,
+	rmultiDash = /([A-Z])/g;
+
+jQuery.extend({
+	cache: {},
+
+	deletedIds: [],
+
+	// Remove at next major release (1.9/2.0)
+	uuid: 0,
+
+	// Unique for each copy of jQuery on the page
+	// Non-digits removed to match rinlinejQuery
+	expando: "jQuery" + ( jQuery.fn.jquery + Math.random() ).replace( /\D/g, "" ),
+
+	// The following elements throw uncatchable exceptions if you
+	// attempt to add expando properties to them.
+	noData: {
+		"embed": true,
+		// Ban all objects except for Flash (which handle expandos)
+		"object": "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000",
+		"applet": true
+	},
+
+	hasData: function( elem ) {
+		elem = elem.nodeType ? jQuery.cache[ elem[jQuery.expando] ] : elem[ jQuery.expando ];
+		return !!elem && !isEmptyDataObject( elem );
+	},
+
+	data: function( elem, name, data, pvt /* Internal Use Only */ ) {
+		if ( !jQuery.acceptData( elem ) ) {
+			return;
+		}
+
+		var thisCache, ret,
+			internalKey = jQuery.expando,
+			getByName = typeof name === "string",
+
+			// We have to handle DOM nodes and JS objects differently because IE6-7
+			// can't GC object references properly across the DOM-JS boundary
+			isNode = elem.nodeType,
+
+			// Only DOM nodes need the global jQuery cache; JS object data is
+			// attached directly to the object so GC can occur automatically
+			cache = isNode ? jQuery.cache : elem,
+
+			// Only defining an ID for JS objects if its cache already exists allows
+			// the code to shortcut on the same path as a DOM node with no cache
+			id = isNode ? elem[ internalKey ] : elem[ internalKey ] && internalKey;
+
+		// Avoid doing any more work than we need to when trying to get data on an
+		// object that has no data at all
+		if ( (!id || !cache[id] || (!pvt && !cache[id].data)) && getByName && data === undefined ) {
+			return;
+		}
+
+		if ( !id ) {
+			// Only DOM nodes need a new unique ID for each element since their data
+			// ends up in the global cache
+			if ( isNode ) {
+				elem[ internalKey ] = id = jQuery.deletedIds.pop() || jQuery.guid++;
+			} else {
+				id = internalKey;
+			}
+		}
+
+		if ( !cache[ id ] ) {
+			cache[ id ] = {};
+
+			// Avoids exposing jQuery metadata on plain JS objects when the object
+			// is serialized using JSON.stringify
+			if ( !isNode ) {
+				cache[ id ].toJSON = jQuery.noop;
+			}
+		}
+
+		// An object can be passed to jQuery.data instead of a key/value pair; this gets
+		// shallow copied over onto the existing cache
+		if ( typeof name === "object" || typeof name === "function" ) {
+			if ( pvt ) {
+				cache[ id ] = jQuery.extend( cache[ id ], name );
+			} else {
+				cache[ id ].data = jQuery.extend( cache[ id ].data, name );
+			}
+		}
+
+		thisCache = cache[ id ];
+
+		// jQuery data() is stored in a separate object inside the object's internal data
+		// cache in order to avoid key collisions between internal data and user-defined
+		// data.
+		if ( !pvt ) {
+			if ( !thisCache.data ) {
+				thisCache.data = {};
+			}
+
+			thisCache = thisCache.data;
+		}
+
+		if ( data !== undefined ) {
+			thisCache[ jQuery.camelCase( name ) ] = data;
+		}
+
+		// Check for both converted-to-camel and non-converted data property names
+		// If a data property was specified
+		if ( getByName ) {
+
+			// First Try to find as-is property data
+			ret = thisCache[ name ];
+
+			// Test for null|undefined property data
+			if ( ret == null ) {
+
+				// Try to find the camelCased property
+				ret = thisCache[ jQuery.camelCase( name ) ];
+			}
+		} else {
+			ret = thisCache;
+		}
+
+		return ret;
+	},
+
+	removeData: function( elem, name, pvt /* Internal Use Only */ ) {
+		if ( !jQuery.acceptData( elem ) ) {
+			return;
+		}
+
+		var thisCache, i, l,
+
+			isNode = elem.nodeType,
+
+			// See jQuery.data for more information
+			cache = isNode ? jQuery.cache : elem,
+			id = isNode ? elem[ jQuery.expando ] : jQuery.expando;
+
+		// If there is already no cache entry for this object, there is no
+		// purpose in continuing
+		if ( !cache[ id ] ) {
+			return;
+		}
+
+		if ( name ) {
+
+			thisCache = pvt ? cache[ id ] : cache[ id ].data;
+
+			if ( thisCache ) {
+
+				// Support array or space separated string names for data keys
+				if ( !jQuery.isArray( name ) ) {
+
+					// try the string as a key before any manipulation
+					if ( name in thisCache ) {
+						name = [ name ];
+					} else {
+
+						// split the camel cased version by spaces unless a key with the spaces exists
+						name = jQuery.camelCase( name );
+						if ( name in thisCache ) {
+							name = [ name ];
+						} else {
+							name = name.split(" ");
+						}
+					}
+				}
+
+				for ( i = 0, l = name.length; i < l; i++ ) {
+					delete thisCache[ name[i] ];
+				}
+
+				// If there is no data left in the cache, we want to continue
+				// and let the cache object itself get destroyed
+				if ( !( pvt ? isEmptyDataObject : jQuery.isEmptyObject )( thisCache ) ) {
+					return;
+				}
+			}
+		}
+
+		// See jQuery.data for more information
+		if ( !pvt ) {
+			delete cache[ id ].data;
+
+			// Don't destroy the parent cache unless the internal data object
+			// had been the only thing left in it
+			if ( !isEmptyDataObject( cache[ id ] ) ) {
+				return;
+			}
+		}
+
+		// Destroy the cache
+		if ( isNode ) {
+			jQuery.cleanData( [ elem ], true );
+
+		// Use delete when supported for expandos or `cache` is not a window per isWindow (#10080)
+		} else if ( jQuery.support.deleteExpando || cache != cache.window ) {
+			delete cache[ id ];
+
+		// When all else fails, null
+		} else {
+			cache[ id ] = null;
+		}
+	},
+
+	// For internal use only.
+	_data: function( elem, name, data ) {
+		return jQuery.data( elem, name, data, true );
+	},
+
+	// A method for determining if a DOM node can handle the data expando
+	acceptData: function( elem ) {
+		var noData = elem.nodeName && jQuery.noData[ elem.nodeName.toLowerCase() ];
+
+		// nodes accept data unless otherwise specified; rejection can be conditional
+		return !noData || noData !== true && elem.getAttribute("classid") === noData;
+	}
+});
+
+jQuery.fn.extend({
+	data: function( key, value ) {
+		var parts, part, attr, name, l,
+			elem = this[0],
+			i = 0,
+			data = null;
+
+		// Gets all values
+		if ( key === undefined ) {
+			if ( this.length ) {
+				data = jQuery.data( elem );
+
+				if ( elem.nodeType === 1 && !jQuery._data( elem, "parsedAttrs" ) ) {
+					attr = elem.attributes;
+					for ( l = attr.length; i < l; i++ ) {
+						name = attr[i].name;
+
+						if ( !name.indexOf( "data-" ) ) {
+							name = jQuery.camelCase( name.substring(5) );
+
+							dataAttr( elem, name, data[ name ] );
+						}
+					}
+					jQuery._data( elem, "parsedAttrs", true );
+				}
+			}
+
+			return data;
+		}
+
+		// Sets multiple values
+		if ( typeof key === "object" ) {
+			return this.each(function() {
+				jQuery.data( this, key );
+			});
+		}
+
+		parts = key.split( ".", 2 );
+		parts[1] = parts[1] ? "." + parts[1] : "";
+		part = parts[1] + "!";
+
+		return jQuery.access( this, function( value ) {
+
+			if ( value === undefined ) {
+				data = this.triggerHandler( "getData" + part, [ parts[0] ] );
+
+				// Try to fetch any internally stored data first
+				if ( data === undefined && elem ) {
+					data = jQuery.data( elem, key );
+					data = dataAttr( elem, key, data );
+				}
+
+				return data === undefined && parts[1] ?
+					this.data( parts[0] ) :
+					data;
+			}
+
+			parts[1] = value;
+			this.each(function() {
+				var self = jQuery( this );
+
+				self.triggerHandler( "setData" + part, parts );
+				jQuery.data( this, key, value );
+				self.triggerHandler( "changeData" + part, parts );
+			});
+		}, null, value, arguments.length > 1, null, false );
+	},
+
+	removeData: function( key ) {
+		return this.each(function() {
+			jQuery.removeData( this, key );
+		});
+	}
+});
+
+function dataAttr( elem, key, data ) {
+	// If nothing was found internally, try to fetch any
+	// data from the HTML5 data-* attribute
+	if ( data === undefined && elem.nodeType === 1 ) {
+
+		var name = "data-" + key.replace( rmultiDash, "-$1" ).toLowerCase();
+
+		data = elem.getAttribute( name );
+
+		if ( typeof data === "string" ) {
+			try {
+				data = data === "true" ? true :
+				data === "false" ? false :
+				data === "null" ? null :
+				// Only convert to a number if it doesn't change the string
+				+data + "" === data ? +data :
+				rbrace.test( data ) ? jQuery.parseJSON( data ) :
+					data;
+			} catch( e ) {}
+
+			// Make sure we set the data so it isn't changed later
+			jQuery.data( elem, key, data );
+
+		} else {
+			data = undefined;
+		}
+	}
+
+	return data;
+}
+
+// checks a cache object for emptiness
+function isEmptyDataObject( obj ) {
+	var name;
+	for ( name in obj ) {
+
+		// if the public data object is empty, the private is still empty
+		if ( name === "data" && jQuery.isEmptyObject( obj[name] ) ) {
+			continue;
+		}
+		if ( name !== "toJSON" ) {
+			return false;
+		}
+	}
+
+	return true;
+}
+jQuery.extend({
+	queue: function( elem, type, data ) {
+		var queue;
+
+		if ( elem ) {
+			type = ( type || "fx" ) + "queue";
+			queue = jQuery._data( elem, type );
+
+			// Speed up dequeue by getting out quickly if this is just a lookup
+			if ( data ) {
+				if ( !queue || jQuery.isArray(data) ) {
+					queue = jQuery._data( elem, type, jQuery.makeArray(data) );
+				} else {
+					queue.push( data );
+				}
+			}
+			return queue || [];
+		}
+	},
+
+	dequeue: function( elem, type ) {
+		type = type || "fx";
+
+		var queue = jQuery.queue( elem, type ),
+			startLength = queue.length,
+			fn = queue.shift(),
+			hooks = jQuery._queueHooks( elem, type ),
+			next = function() {
+				jQuery.dequeue( elem, type );
+			};
+
+		// If the fx queue is dequeued, always remove the progress sentinel
+		if ( fn === "inprogress" ) {
+			fn = queue.shift();
+			startLength--;
+		}
+
+		if ( fn ) {
+
+			// Add a progress sentinel to prevent the fx queue from being
+			// automatically dequeued
+			if ( type === "fx" ) {
+				queue.unshift( "inprogress" );
+			}
+
+			// clear up the last queue stop function
+			delete hooks.stop;
+			fn.call( elem, next, hooks );
+		}
+
+		if ( !startLength && hooks ) {
+			hooks.empty.fire();
+		}
+	},
+
+	// not intended for public consumption - generates a queueHooks object, or returns the current one
+	_queueHooks: function( elem, type ) {
+		var key = type + "queueHooks";
+		return jQuery._data( elem, key ) || jQuery._data( elem, key, {
+			empty: jQuery.Callbacks("once memory").add(function() {
+				jQuery.removeData( elem, type + "queue", true );
+				jQuery.removeData( elem, key, true );
+			})
+		});
+	}
+});
+
+jQuery.fn.extend({
+	queue: function( type, data ) {
+		var setter = 2;
+
+		if ( typeof type !== "string" ) {
+			data = type;
+			type = "fx";
+			setter--;
+		}
+
+		if ( arguments.length < setter ) {
+			return jQuery.queue( this[0], type );
+		}
+
+		return data === undefined ?
+			this :
+			this.each(function() {
+				var queue = jQuery.queue( this, type, data );
+
+				// ensure a hooks for this queue
+				jQuery._queueHooks( this, type );
+
+				if ( type === "fx" && queue[0] !== "inprogress" ) {
+					jQuery.dequeue( this, type );
+				}
+			});
+	},
+	dequeue: function( type ) {
+		return this.each(function() {
+			jQuery.dequeue( this, type );
+		});
+	},
+	// Based off of the plugin by Clint Helfers, with permission.
+	// http://blindsignals.com/index.php/2009/07/jquery-delay/
+	delay: function( time, type ) {
+		time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
+		type = type || "fx";
+
+		return this.queue( type, function( next, hooks ) {
+			var timeout = setTimeout( next, time );
+			hooks.stop = function() {
+				clearTimeout( timeout );
+			};
+		});
+	},
+	clearQueue: function( type ) {
+		return this.queue( type || "fx", [] );
+	},
+	// Get a promise resolved when queues of a certain type
+	// are emptied (fx is the type by default)
+	promise: function( type, obj ) {
+		var tmp,
+			count = 1,
+			defer = jQuery.Deferred(),
+			elements = this,
+			i = this.length,
+			resolve = function() {
+				if ( !( --count ) ) {
+					defer.resolveWith( elements, [ elements ] );
+				}
+			};
+
+		if ( typeof type !== "string" ) {
+			obj = type;
+			type = undefined;
+		}
+		type = type || "fx";
+
+		while( i-- ) {
+			tmp = jQuery._data( elements[ i ], type + "queueHooks" );
+			if ( tmp && tmp.empty ) {
+				count++;
+				tmp.empty.add( resolve );
+			}
+		}
+		resolve();
+		return defer.promise( obj );
+	}
+});
+var nodeHook, boolHook, fixSpecified,
+	rclass = /[\t\r\n]/g,
+	rreturn = /\r/g,
+	rtype = /^(?:button|input)$/i,
+	rfocusable = /^(?:button|input|object|select|textarea)$/i,
+	rclickable = /^a(?:rea|)$/i,
+	rboolean = /^(?:autofocus|autoplay|async|checked|controls|defer|disabled|hidden|loop|multiple|open|readonly|required|scoped|selected)$/i,
+	getSetAttribute = jQuery.support.getSetAttribute;
+
+jQuery.fn.extend({
+	attr: function( name, value ) {
+		return jQuery.access( this, jQuery.attr, name, value, arguments.length > 1 );
+	},
+
+	removeAttr: function( name ) {
+		return this.each(function() {
+			jQuery.removeAttr( this, name );
+		});
+	},
+
+	prop: function( name, value ) {
+		return jQuery.access( this, jQuery.prop, name, value, arguments.length > 1 );
+	},
+
+	removeProp: function( name ) {
+		name = jQuery.propFix[ name ] || name;
+		return this.each(function() {
+			// try/catch handles cases where IE balks (such as removing a property on window)
+			try {
+				this[ name ] = undefined;
+				delete this[ name ];
+			} catch( e ) {}
+		});
+	},
+
+	addClass: function( value ) {
+		var classNames, i, l, elem,
+			setClass, c, cl;
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each(function( j ) {
+				jQuery( this ).addClass( value.call(this, j, this.className) );
+			});
+		}
+
+		if ( value && typeof value === "string" ) {
+			classNames = value.split( core_rspace );
+
+			for ( i = 0, l = this.length; i < l; i++ ) {
+				elem = this[ i ];
+
+				if ( elem.nodeType === 1 ) {
+					if ( !elem.className && classNames.length === 1 ) {
+						elem.className = value;
+
+					} else {
+						setClass = " " + elem.className + " ";
+
+						for ( c = 0, cl = classNames.length; c < cl; c++ ) {
+							if ( setClass.indexOf( " " + classNames[ c ] + " " ) < 0 ) {
+								setClass += classNames[ c ] + " ";
+							}
+						}
+						elem.className = jQuery.trim( setClass );
+					}
+				}
+			}
+		}
+
+		return this;
+	},
+
+	removeClass: function( value ) {
+		var removes, className, elem, c, cl, i, l;
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each(function( j ) {
+				jQuery( this ).removeClass( value.call(this, j, this.className) );
+			});
+		}
+		if ( (value && typeof value === "string") || value === undefined ) {
+			removes = ( value || "" ).split( core_rspace );
+
+			for ( i = 0, l = this.length; i < l; i++ ) {
+				elem = this[ i ];
+				if ( elem.nodeType === 1 && elem.className ) {
+
+					className = (" " + elem.className + " ").replace( rclass, " " );
+
+					// loop over each item in the removal list
+					for ( c = 0, cl = removes.length; c < cl; c++ ) {
+						// Remove until there is nothing to remove,
+						while ( className.indexOf(" " + removes[ c ] + " ") >= 0 ) {
+							className = className.replace( " " + removes[ c ] + " " , " " );
+						}
+					}
+					elem.className = value ? jQuery.trim( className ) : "";
+				}
+			}
+		}
+
+		return this;
+	},
+
+	toggleClass: function( value, stateVal ) {
+		var type = typeof value,
+			isBool = typeof stateVal === "boolean";
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each(function( i ) {
+				jQuery( this ).toggleClass( value.call(this, i, this.className, stateVal), stateVal );
+			});
+		}
+
+		return this.each(function() {
+			if ( type === "string" ) {
+				// toggle individual class names
+				var className,
+					i = 0,
+					self = jQuery( this ),
+					state = stateVal,
+					classNames = value.split( core_rspace );
+
+				while ( (className = classNames[ i++ ]) ) {
+					// check each className given, space separated list
+					state = isBool ? state : !self.hasClass( className );
+					self[ state ? "addClass" : "removeClass" ]( className );
+				}
+
+			} else if ( type === "undefined" || type === "boolean" ) {
+				if ( this.className ) {
+					// store className if set
+					jQuery._data( this, "__className__", this.className );
+				}
+
+				// toggle whole className
+				this.className = this.className || value === false ? "" : jQuery._data( this, "__className__" ) || "";
+			}
+		});
+	},
+
+	hasClass: function( selector ) {
+		var className = " " + selector + " ",
+			i = 0,
+			l = this.length;
+		for ( ; i < l; i++ ) {
+			if ( this[i].nodeType === 1 && (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) >= 0 ) {
+				return true;
+			}
+		}
+
+		return false;
+	},
+
+	val: function( value ) {
+		var hooks, ret, isFunction,
+			elem = this[0];
+
+		if ( !arguments.length ) {
+			if ( elem ) {
+				hooks = jQuery.valHooks[ elem.type ] || jQuery.valHooks[ elem.nodeName.toLowerCase() ];
+
+				if ( hooks && "get" in hooks && (ret = hooks.get( elem, "value" )) !== undefined ) {
+					return ret;
+				}
+
+				ret = elem.value;
+
+				return typeof ret === "string" ?
+					// handle most common string cases
+					ret.replace(rreturn, "") :
+					// handle cases where value is null/undef or number
+					ret == null ? "" : ret;
+			}
+
+			return;
+		}
+
+		isFunction = jQuery.isFunction( value );
+
+		return this.each(function( i ) {
+			var val,
+				self = jQuery(this);
+
+			if ( this.nodeType !== 1 ) {
+				return;
+			}
+
+			if ( isFunction ) {
+				val = value.call( this, i, self.val() );
+			} else {
+				val = value;
+			}
+
+			// Treat null/undefined as ""; convert numbers to string
+			if ( val == null ) {
+				val = "";
+			} else if ( typeof val === "number" ) {
+				val += "";
+			} else if ( jQuery.isArray( val ) ) {
+				val = jQuery.map(val, function ( value ) {
+					return value == null ? "" : value + "";
+				});
+			}
+
+			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];
+
+			// If set returns undefined, fall back to normal setting
+			if ( !hooks || !("set" in hooks) || hooks.set( this, val, "value" ) === undefined ) {
+				this.value = val;
+			}
+		});
+	}
+});
+
+jQuery.extend({
+	valHooks: {
+		option: {
+			get: function( elem ) {
+				// attributes.value is undefined in Blackberry 4.7 but
+				// uses .value. See #6932
+				var val = elem.attributes.value;
+				return !val || val.specified ? elem.value : elem.text;
+			}
+		},
+		select: {
+			get: function( elem ) {
+				var value, option,
+					options = elem.options,
+					index = elem.selectedIndex,
+					one = elem.type === "select-one" || index < 0,
+					values = one ? null : [],
+					max = one ? index + 1 : options.length,
+					i = index < 0 ?
+						max :
+						one ? index : 0;
+
+				// Loop through all the selected options
+				for ( ; i < max; i++ ) {
+					option = options[ i ];
+
+					// oldIE doesn't update selected after form reset (#2551)
+					if ( ( option.selected || i === index ) &&
+							// Don't return options that are disabled or in a disabled optgroup
+							( jQuery.support.optDisabled ? !option.disabled : option.getAttribute("disabled") === null ) &&
+							( !option.parentNode.disabled || !jQuery.nodeName( option.parentNode, "optgroup" ) ) ) {
+
+						// Get the specific value for the option
+						value = jQuery( option ).val();
+
+						// We don't need an array for one selects
+						if ( one ) {
+							return value;
+						}
+
+						// Multi-Selects return an array
+						values.push( value );
+					}
+				}
+
+				return values;
+			},
+
+			set: function( elem, value ) {
+				var values = jQuery.makeArray( value );
+
+				jQuery(elem).find("option").each(function() {
+					this.selected = jQuery.inArray( jQuery(this).val(), values ) >= 0;
+				});
+
+				if ( !values.length ) {
+					elem.selectedIndex = -1;
+				}
+				return values;
+			}
+		}
+	},
+
+	// Unused in 1.8, left in so attrFn-stabbers won't die; remove in 1.9
+	attrFn: {},
+
+	attr: function( elem, name, value, pass ) {
+		var ret, hooks, notxml,
+			nType = elem.nodeType;
+
+		// don't get/set attributes on text, comment and attribute nodes
+		if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
+			return;
+		}
+
+		if ( pass && jQuery.isFunction( jQuery.fn[ name ] ) ) {
+			return jQuery( elem )[ name ]( value );
+		}
+
+		// Fallback to prop when attributes are not supported
+		if ( typeof elem.getAttribute === "undefined" ) {
+			return jQuery.prop( elem, name, value );
+		}
+
+		notxml = nType !== 1 || !jQuery.isXMLDoc( elem );
+
+		// All attributes are lowercase
+		// Grab necessary hook if one is defined
+		if ( notxml ) {
+			name = name.toLowerCase();
+			hooks = jQuery.attrHooks[ name ] || ( rboolean.test( name ) ? boolHook : nodeHook );
+		}
+
+		if ( value !== undefined ) {
+
+			if ( value === null ) {
+				jQuery.removeAttr( elem, name );
+				return;
+
+			} else if ( hooks && "set" in hooks && notxml && (ret = hooks.set( elem, value, name )) !== undefined ) {
+				return ret;
+
+			} else {
+				elem.setAttribute( name, value + "" );
+				return value;
+			}
+
+		} else if ( hooks && "get" in hooks && notxml && (ret = hooks.get( elem, name )) !== null ) {
+			return ret;
+
+		} else {
+
+			ret = elem.getAttribute( name );
+
+			// Non-existent attributes return null, we normalize to undefined
+			return ret === null ?
+				undefined :
+				ret;
+		}
+	},
+
+	removeAttr: function( elem, value ) {
+		var propName, attrNames, name, isBool,
+			i = 0;
+
+		if ( value && elem.nodeType === 1 ) {
+
+			attrNames = value.split( core_rspace );
+
+			for ( ; i < attrNames.length; i++ ) {
+				name = attrNames[ i ];
+
+				if ( name ) {
+					propName = jQuery.propFix[ name ] || name;
+					isBool = rboolean.test( name );
+
+					// See #9699 for explanation of this approach (setting first, then removal)
+					// Do not do this for boolean attributes (see #10870)
+					if ( !isBool ) {
+						jQuery.attr( elem, name, "" );
+					}
+					elem.removeAttribute( getSetAttribute ? name : propName );
+
+					// Set corresponding property to false for boolean attributes
+					if ( isBool && propName in elem ) {
+						elem[ propName ] = false;
+					}
+				}
+			}
+		}
+	},
+
+	attrHooks: {
+		type: {
+			set: function( elem, value ) {
+				// We can't allow the type property to be changed (since it causes problems in IE)
+				if ( rtype.test( elem.nodeName ) && elem.parentNode ) {
+					jQuery.error( "type property can't be changed" );
+				} else if ( !jQuery.support.radioValue && value === "radio" && jQuery.nodeName(elem, "input") ) {
+					// Setting the type on a radio button after the value resets the value in IE6-9
+					// Reset value to it's default in case type is set after value
+					// This is for element creation
+					var val = elem.value;
+					elem.setAttribute( "type", value );
+					if ( val ) {
+						elem.value = val;
+					}
+					return value;
+				}
+			}
+		},
+		// Use the value property for back compat
+		// Use the nodeHook for button elements in IE6/7 (#1954)
+		value: {
+			get: function( elem, name ) {
+				if ( nodeHook && jQuery.nodeName( elem, "button" ) ) {
+					return nodeHook.get( elem, name );
+				}
+				return name in elem ?
+					elem.value :
+					null;
+			},
+			set: function( elem, value, name ) {
+				if ( nodeHook && jQuery.nodeName( elem, "button" ) ) {
+					return nodeHook.set( elem, value, name );
+				}
+				// Does not return so that setAttribute is also used
+				elem.value = value;
+			}
+		}
+	},
+
+	propFix: {
+		tabindex: "tabIndex",
+		readonly: "readOnly",
+		"for": "htmlFor",
+		"class": "className",
+		maxlength: "maxLength",
+		cellspacing: "cellSpacing",
+		cellpadding: "cellPadding",
+		rowspan: "rowSpan",
+		colspan: "colSpan",
+		usemap: "useMap",
+		frameborder: "frameBorder",
+		contenteditable: "contentEditable"
+	},
+
+	prop: function( elem, name, value ) {
+		var ret, hooks, notxml,
+			nType = elem.nodeType;
+
+		// don't get/set properties on text, comment and attribute nodes
+		if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
+			return;
+		}
+
+		notxml = nType !== 1 || !jQuery.isXMLDoc( elem );
+
+		if ( notxml ) {
+			// Fix name and attach hooks
+			name = jQuery.propFix[ name ] || name;
+			hooks = jQuery.propHooks[ name ];
+		}
+
+		if ( value !== undefined ) {
+			if ( hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ) {
+				return ret;
+
+			} else {
+				return ( elem[ name ] = value );
+			}
+
+		} else {
+			if ( hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ) {
+				return ret;
+
+			} else {
+				return elem[ name ];
+			}
+		}
+	},
+
+	propHooks: {
+		tabIndex: {
+			get: function( elem ) {
+				// elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set
+				// http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
+				var attributeNode = elem.getAttributeNode("tabindex");
+
+				return attributeNode && attributeNode.specified ?
+					parseInt( attributeNode.value, 10 ) :
+					rfocusable.test( elem.nodeName ) || rclickable.test( elem.nodeName ) && elem.href ?
+						0 :
+						undefined;
+			}
+		}
+	}
+});
+
+// Hook for boolean attributes
+boolHook = {
+	get: function( elem, name ) {
+		// Align boolean attributes with corresponding properties
+		// Fall back to attribute presence where some booleans are not supported
+		var attrNode,
+			property = jQuery.prop( elem, name );
+		return property === true || typeof property !== "boolean" && ( attrNode = elem.getAttributeNode(name) ) && attrNode.nodeValue !== false ?
+			name.toLowerCase() :
+			undefined;
+	},
+	set: function( elem, value, name ) {
+		var propName;
+		if ( value === false ) {
+			// Remove boolean attributes when set to false
+			jQuery.removeAttr( elem, name );
+		} else {
+			// value is true since we know at this point it's type boolean and not false
+			// Set boolean attributes to the same name and set the DOM property
+			propName = jQuery.propFix[ name ] || name;
+			if ( propName in elem ) {
+				// Only set the IDL specifically if it already exists on the element
+				elem[ propName ] = true;
+			}
+
+			elem.setAttribute( name, name.toLowerCase() );
+		}
+		return name;
+	}
+};
+
+// IE6/7 do not support getting/setting some attributes with get/setAttribute
+if ( !getSetAttribute ) {
+
+	fixSpecified = {
+		name: true,
+		id: true,
+		coords: true
+	};
+
+	// Use this for any attribute in IE6/7
+	// This fixes almost every IE6/7 issue
+	nodeHook = jQuery.valHooks.button = {
+		get: function( elem, name ) {
+			var ret;
+			ret = elem.getAttributeNode( name );
+			return ret && ( fixSpecified[ name ] ? ret.value !== "" : ret.specified ) ?
+				ret.value :
+				undefined;
+		},
+		set: function( elem, value, name ) {
+			// Set the existing or create a new attribute node
+			var ret = elem.getAttributeNode( name );
+			if ( !ret ) {
+				ret = document.createAttribute( name );
+				elem.setAttributeNode( ret );
+			}
+			return ( ret.value = value + "" );
+		}
+	};
+
+	// Set width and height to auto instead of 0 on empty string( Bug #8150 )
+	// This is for removals
+	jQuery.each([ "width", "height" ], function( i, name ) {
+		jQuery.attrHooks[ name ] = jQuery.extend( jQuery.attrHooks[ name ], {
+			set: function( elem, value ) {
+				if ( value === "" ) {
+					elem.setAttribute( name, "auto" );
+					return value;
+				}
+			}
+		});
+	});
+
+	// Set contenteditable to false on removals(#10429)
+	// Setting to empty string throws an error as an invalid value
+	jQuery.attrHooks.contenteditable = {
+		get: nodeHook.get,
+		set: function( elem, value, name ) {
+			if ( value === "" ) {
+				value = "false";
+			}
+			nodeHook.set( elem, value, name );
+		}
+	};
+}
+
+
+// Some attributes require a special call on IE
+if ( !jQuery.support.hrefNormalized ) {
+	jQuery.each([ "href", "src", "width", "height" ], function( i, name ) {
+		jQuery.attrHooks[ name ] = jQuery.extend( jQuery.attrHooks[ name ], {
+			get: function( elem ) {
+				var ret = elem.getAttribute( name, 2 );
+				return ret === null ? undefined : ret;
+			}
+		});
+	});
+}
+
+if ( !jQuery.support.style ) {
+	jQuery.attrHooks.style = {
+		get: function( elem ) {
+			// Return undefined in the case of empty string
+			// Normalize to lowercase since IE uppercases css property names
+			return elem.style.cssText.toLowerCase() || undefined;
+		},
+		set: function( elem, value ) {
+			return ( elem.style.cssText = value + "" );
+		}
+	};
+}
+
+// Safari mis-reports the default selected property of an option
+// Accessing the parent's selectedIndex property fixes it
+if ( !jQuery.support.optSelected ) {
+	jQuery.propHooks.selected = jQuery.extend( jQuery.propHooks.selected, {
+		get: function( elem ) {
+			var parent = elem.parentNode;
+
+			if ( parent ) {
+				parent.selectedIndex;
+
+				// Make sure that it also works with optgroups, see #5701
+				if ( parent.parentNode ) {
+					parent.parentNode.selectedIndex;
+				}
+			}
+			return null;
+		}
+	});
+}
+
+// IE6/7 call enctype encoding
+if ( !jQuery.support.enctype ) {
+	jQuery.propFix.enctype = "encoding";
+}
+
+// Radios and checkboxes getter/setter
+if ( !jQuery.support.checkOn ) {
+	jQuery.each([ "radio", "checkbox" ], function() {
+		jQuery.valHooks[ this ] = {
+			get: function( elem ) {
+				// Handle the case where in Webkit "" is returned instead of "on" if a value isn't specified
+				return elem.getAttribute("value") === null ? "on" : elem.value;
+			}
+		};
+	});
+}
+jQuery.each([ "radio", "checkbox" ], function() {
+	jQuery.valHooks[ this ] = jQuery.extend( jQuery.valHooks[ this ], {
+		set: function( elem, value ) {
+			if ( jQuery.isArray( value ) ) {
+				return ( elem.checked = jQuery.inArray( jQuery(elem).val(), value ) >= 0 );
+			}
+		}
+	});
+});
+var rformElems = /^(?:textarea|input|select)$/i,
+	rtypenamespace = /^([^\.]*|)(?:\.(.+)|)$/,
+	rhoverHack = /(?:^|\s)hover(\.\S+|)\b/,
+	rkeyEvent = /^key/,
+	rmouseEvent = /^(?:mouse|contextmenu)|click/,
+	rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
+	hoverHack = function( events ) {
+		return jQuery.event.special.hover ? events : events.replace( rhoverHack, "mouseenter$1 mouseleave$1" );
+	};
+
+/*
+ * Helper functions for managing events -- not part of the public interface.
+ * Props to Dean Edwards' addEvent library for many of the ideas.
+ */
+jQuery.event = {
+
+	add: function( elem, types, handler, data, selector ) {
+
+		var elemData, eventHandle, events,
+			t, tns, type, namespaces, handleObj,
+			handleObjIn, handlers, special;
+
+		// Don't attach events to noData or text/comment nodes (allow plain objects tho)
+		if ( elem.nodeType === 3 || elem.nodeType === 8 || !types || !handler || !(elemData = jQuery._data( elem )) ) {
+			return;
+		}
+
+		// Caller can pass in an object of custom data in lieu of the handler
+		if ( handler.handler ) {
+			handleObjIn = handler;
+			handler = handleObjIn.handler;
+			selector = handleObjIn.selector;
+		}
+
+		// Make sure that the handler has a unique ID, used to find/remove it later
+		if ( !handler.guid ) {
+			handler.guid = jQuery.guid++;
+		}
+
+		// Init the element's event structure and main handler, if this is the first
+		events = elemData.events;
+		if ( !events ) {
+			elemData.events = events = {};
+		}
+		eventHandle = elemData.handle;
+		if ( !eventHandle ) {
+			elemData.handle = eventHandle = function( e ) {
+				// Discard the second event of a jQuery.event.trigger() and
+				// when an event is called after a page has unloaded
+				return typeof jQuery !== "undefined" && (!e || jQuery.event.triggered !== e.type) ?
+					jQuery.event.dispatch.apply( eventHandle.elem, arguments ) :
+					undefined;
+			};
+			// Add elem as a property of the handle fn to prevent a memory leak with IE non-native events
+			eventHandle.elem = elem;
+		}
+
+		// Handle multiple events separated by a space
+		// jQuery(...).bind("mouseover mouseout", fn);
+		types = jQuery.trim( hoverHack(types) ).split( " " );
+		for ( t = 0; t < types.length; t++ ) {
+
+			tns = rtypenamespace.exec( types[t] ) || [];
+			type = tns[1];
+			namespaces = ( tns[2] || "" ).split( "." ).sort();
+
+			// If event changes its type, use the special event handlers for the changed type
+			special = jQuery.event.special[ type ] || {};
+
+			// If selector defined, determine special event api type, otherwise given type
+			type = ( selector ? special.delegateType : special.bindType ) || type;
+
+			// Update special based on newly reset type
+			special = jQuery.event.special[ type ] || {};
+
+			// handleObj is passed to all event handlers
+			handleObj = jQuery.extend({
+				type: type,
+				origType: tns[1],
+				data: data,
+				handler: handler,
+				guid: handler.guid,
+				selector: selector,
+				needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
+				namespace: namespaces.join(".")
+			}, handleObjIn );
+
+			// Init the event handler queue if we're the first
+			handlers = events[ type ];
+			if ( !handlers ) {
+				handlers = events[ type ] = [];
+				handlers.delegateCount = 0;
+
+				// Only use addEventListener/attachEvent if the special events handler returns false
+				if ( !special.setup || special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
+					// Bind the global event handler to the element
+					if ( elem.addEventListener ) {
+						elem.addEventListener( type, eventHandle, false );
+
+					} else if ( elem.attachEvent ) {
+						elem.attachEvent( "on" + type, eventHandle );
+					}
+				}
+			}
+
+			if ( special.add ) {
+				special.add.call( elem, handleObj );
+
+				if ( !handleObj.handler.guid ) {
+					handleObj.handler.guid = handler.guid;
+				}
+			}
+
+			// Add to the element's handler list, delegates in front
+			if ( selector ) {
+				handlers.splice( handlers.delegateCount++, 0, handleObj );
+			} else {
+				handlers.push( handleObj );
+			}
+
+			// Keep track of which events have ever been used, for event optimization
+			jQuery.event.global[ type ] = true;
+		}
+
+		// Nullify elem to prevent memory leaks in IE
+		elem = null;
+	},
+
+	global: {},
+
+	// Detach an event or set of events from an element
+	remove: function( elem, types, handler, selector, mappedTypes ) {
+
+		var t, tns, type, origType, namespaces, origCount,
+			j, events, special, eventType, handleObj,
+			elemData = jQuery.hasData( elem ) && jQuery._data( elem );
+
+		if ( !elemData || !(events = elemData.events) ) {
+			return;
+		}
+
+		// Once for each type.namespace in types; type may be omitted
+		types = jQuery.trim( hoverHack( types || "" ) ).split(" ");
+		for ( t = 0; t < types.length; t++ ) {
+			tns = rtypenamespace.exec( types[t] ) || [];
+			type = origType = tns[1];
+			namespaces = tns[2];
+
+			// Unbind all events (on this namespace, if provided) for the element
+			if ( !type ) {
+				for ( type in events ) {
+					jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
+				}
+				continue;
+			}
+
+			special = jQuery.event.special[ type ] || {};
+			type = ( selector? special.delegateType : special.bindType ) || type;
+			eventType = events[ type ] || [];
+			origCount = eventType.length;
+			namespaces = namespaces ? new RegExp("(^|\\.)" + namespaces.split(".").sort().join("\\.(?:.*\\.|)") + "(\\.|$)") : null;
+
+			// Remove matching events
+			for ( j = 0; j < eventType.length; j++ ) {
+				handleObj = eventType[ j ];
+
+				if ( ( mappedTypes || origType === handleObj.origType ) &&
+					 ( !handler || handler.guid === handleObj.guid ) &&
+					 ( !namespaces || namespaces.test( handleObj.namespace ) ) &&
+					 ( !selector || selector === handleObj.selector || selector === "**" && handleObj.selector ) ) {
+					eventType.splice( j--, 1 );
+
+					if ( handleObj.selector ) {
+						eventType.delegateCount--;
+					}
+					if ( special.remove ) {
+						special.remove.call( elem, handleObj );
+					}
+				}
+			}
+
+			// Remove generic event handler if we removed something and no more handlers exist
+			// (avoids potential for endless recursion during removal of special event handlers)
+			if ( eventType.length === 0 && origCount !== eventType.length ) {
+				if ( !special.teardown || special.teardown.call( elem, namespaces, elemData.handle ) === false ) {
+					jQuery.removeEvent( elem, type, elemData.handle );
+				}
+
+				delete events[ type ];
+			}
+		}
+
+		// Remove the expando if it's no longer used
+		if ( jQuery.isEmptyObject( events ) ) {
+			delete elemData.handle;
+
+			// removeData also checks for emptiness and clears the expando if empty
+			// so use it instead of delete
+			jQuery.removeData( elem, "events", true );
+		}
+	},
+
+	// Events that are safe to short-circuit if no handlers are attached.
+	// Native DOM events should not be added, they may have inline handlers.
+	customEvent: {
+		"getData": true,
+		"setData": true,
+		"changeData": true
+	},
+
+	trigger: function( event, data, elem, onlyHandlers ) {
+		// Don't do events on text and comment nodes
+		if ( elem && (elem.nodeType === 3 || elem.nodeType === 8) ) {
+			return;
+		}
+
+		// Event object or event type
+		var cache, exclusive, i, cur, old, ontype, special, handle, eventPath, bubbleType,
+			type = event.type || event,
+			namespaces = [];
+
+		// focus/blur morphs to focusin/out; ensure we're not firing them right now
+		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
+			return;
+		}
+
+		if ( type.indexOf( "!" ) >= 0 ) {
+			// Exclusive events trigger only for the exact event (no namespaces)
+			type = type.slice(0, -1);
+			exclusive = true;
+		}
+
+		if ( type.indexOf( "." ) >= 0 ) {
+			// Namespaced trigger; create a regexp to match event type in handle()
+			namespaces = type.split(".");
+			type = namespaces.shift();
+			namespaces.sort();
+		}
+
+		if ( (!elem || jQuery.event.customEvent[ type ]) && !jQuery.event.global[ type ] ) {
+			// No jQuery handlers for this event type, and it can't have inline handlers
+			return;
+		}
+
+		// Caller can pass in an Event, Object, or just an event type string
+		event = typeof event === "object" ?
+			// jQuery.Event object
+			event[ jQuery.expando ] ? event :
+			// Object literal
+			new jQuery.Event( type, event ) :
+			// Just the event type (string)
+			new jQuery.Event( type );
+
+		event.type = type;
+		event.isTrigger = true;
+		event.exclusive = exclusive;
+		event.namespace = namespaces.join( "." );
+		event.namespace_re = event.namespace? new RegExp("(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)") : null;
+		ontype = type.indexOf( ":" ) < 0 ? "on" + type : "";
+
+		// Handle a global trigger
+		if ( !elem ) {
+
+			// TODO: Stop taunting the data cache; remove global events and always attach to document
+			cache = jQuery.cache;
+			for ( i in cache ) {
+				if ( cache[ i ].events && cache[ i ].events[ type ] ) {
+					jQuery.event.trigger( event, data, cache[ i ].handle.elem, true );
+				}
+			}
+			return;
+		}
+
+		// Clean up the event in case it is being reused
+		event.result = undefined;
+		if ( !event.target ) {
+			event.target = elem;
+		}
+
+		// Clone any incoming data and prepend the event, creating the handler arg list
+		data = data != null ? jQuery.makeArray( data ) : [];
+		data.unshift( event );
+
+		// Allow special events to draw outside the lines
+		special = jQuery.event.special[ type ] || {};
+		if ( special.trigger && special.trigger.apply( elem, data ) === false ) {
+			return;
+		}
+
+		// Determine event propagation path in advance, per W3C events spec (#9951)
+		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
+		eventPath = [[ elem, special.bindType || type ]];
+		if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {
+
+			bubbleType = special.delegateType || type;
+			cur = rfocusMorph.test( bubbleType + type ) ? elem : elem.parentNode;
+			for ( old = elem; cur; cur = cur.parentNode ) {
+				eventPath.push([ cur, bubbleType ]);
+				old = cur;
+			}
+
+			// Only add window if we got to document (e.g., not plain obj or detached DOM)
+			if ( old === (elem.ownerDocument || document) ) {
+				eventPath.push([ old.defaultView || old.parentWindow || window, bubbleType ]);
+			}
+		}
+
+		// Fire handlers on the event path
+		for ( i = 0; i < eventPath.length && !event.isPropagationStopped(); i++ ) {
+
+			cur = eventPath[i][0];
+			event.type = eventPath[i][1];
+
+			handle = ( jQuery._data( cur, "events" ) || {} )[ event.type ] && jQuery._data( cur, "handle" );
+			if ( handle ) {
+				handle.apply( cur, data );
+			}
+			// Note that this is a bare JS function and not a jQuery handler
+			handle = ontype && cur[ ontype ];
+			if ( handle && jQuery.acceptData( cur ) && handle.apply && handle.apply( cur, data ) === false ) {
+				event.preventDefault();
+			}
+		}
+		event.type = type;
+
+		// If nobody prevented the default action, do it now
+		if ( !onlyHandlers && !event.isDefaultPrevented() ) {
+
+			if ( (!special._default || special._default.apply( elem.ownerDocument, data ) === false) &&
+				!(type === "click" && jQuery.nodeName( elem, "a" )) && jQuery.acceptData( elem ) ) {
+
+				// Call a native DOM method on the target with the same name name as the event.
+				// Can't use an .isFunction() check here because IE6/7 fails that test.
+				// Don't do default actions on window, that's where global variables be (#6170)
+				// IE<9 dies on focus/blur to hidden element (#1486)
+				if ( ontype && elem[ type ] && ((type !== "focus" && type !== "blur") || event.target.offsetWidth !== 0) && !jQuery.isWindow( elem ) ) {
+
+					// Don't re-trigger an onFOO event when we call its FOO() method
+					old = elem[ ontype ];
+
+					if ( old ) {
+						elem[ ontype ] = null;
+					}
+
+					// Prevent re-triggering of the same event, since we already bubbled it above
+					jQuery.event.triggered = type;
+					elem[ type ]();
+					jQuery.event.triggered = undefined;
+
+					if ( old ) {
+						elem[ ontype ] = old;
+					}
+				}
+			}
+		}
+
+		return event.result;
+	},
+
+	dispatch: function( event ) {
+
+		// Make a writable jQuery.Event from the native event object
+		event = jQuery.event.fix( event || window.event );
+
+		var i, j, cur, ret, selMatch, matched, matches, handleObj, sel, related,
+			handlers = ( (jQuery._data( this, "events" ) || {} )[ event.type ] || []),
+			delegateCount = handlers.delegateCount,
+			args = core_slice.call( arguments ),
+			run_all = !event.exclusive && !event.namespace,
+			special = jQuery.event.special[ event.type ] || {},
+			handlerQueue = [];
+
+		// Use the fix-ed jQuery.Event rather than the (read-only) native event
+		args[0] = event;
+		event.delegateTarget = this;
+
+		// Call the preDispatch hook for the mapped type, and let it bail if desired
+		if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
+			return;
+		}
+
+		// Determine handlers that should run if there are delegated events
+		// Avoid non-left-click bubbling in Firefox (#3861)
+		if ( delegateCount && !(event.button && event.type === "click") ) {
+
+			for ( cur = event.target; cur != this; cur = cur.parentNode || this ) {
+
+				// Don't process clicks (ONLY) on disabled elements (#6911, #8165, #11382, #11764)
+				if ( cur.disabled !== true || event.type !== "click" ) {
+					selMatch = {};
+					matches = [];
+					for ( i = 0; i < delegateCount; i++ ) {
+						handleObj = handlers[ i ];
+						sel = handleObj.selector;
+
+						if ( selMatch[ sel ] === undefined ) {
+							selMatch[ sel ] = handleObj.needsContext ?
+								jQuery( sel, this ).index( cur ) >= 0 :
+								jQuery.find( sel, this, null, [ cur ] ).length;
+						}
+						if ( selMatch[ sel ] ) {
+							matches.push( handleObj );
+						}
+					}
+					if ( matches.length ) {
+						handlerQueue.push({ elem: cur, matches: matches });
+					}
+				}
+			}
+		}
+
+		// Add the remaining (directly-bound) handlers
+		if ( handlers.length > delegateCount ) {
+			handlerQueue.push({ elem: this, matches: handlers.slice( delegateCount ) });
+		}
+
+		// Run delegates first; they may want to stop propagation beneath us
+		for ( i = 0; i < handlerQueue.length && !event.isPropagationStopped(); i++ ) {
+			matched = handlerQueue[ i ];
+			event.currentTarget = matched.elem;
+
+			for ( j = 0; j < matched.matches.length && !event.isImmediatePropagationStopped(); j++ ) {
+				handleObj = matched.matches[ j ];
+
+				// Triggered event must either 1) be non-exclusive and have no namespace, or
+				// 2) have namespace(s) a subset or equal to those in the bound event (both can have no namespace).
+				if ( run_all || (!event.namespace && !handleObj.namespace) || event.namespace_re && event.namespace_re.test( handleObj.namespace ) ) {
+
+					event.data = handleObj.data;
+					event.handleObj = handleObj;
+
+					ret = ( (jQuery.event.special[ handleObj.origType ] || {}).handle || handleObj.handler )
+							.apply( matched.elem, args );
+
+					if ( ret !== undefined ) {
+						event.result = ret;
+						if ( ret === false ) {
+							event.preventDefault();
+							event.stopPropagation();
+						}
+					}
+				}
+			}
+		}
+
+		// Call the postDispatch hook for the mapped type
+		if ( special.postDispatch ) {
+			special.postDispatch.call( this, event );
+		}
+
+		return event.result;
+	},
+
+	// Includes some event props shared by KeyEvent and MouseEvent
+	// *** attrChange attrName relatedNode srcElement  are not normalized, non-W3C, deprecated, will be removed in 1.8 ***
+	props: "attrChange attrName relatedNode srcElement altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "),
+
+	fixHooks: {},
+
+	keyHooks: {
+		props: "char charCode key keyCode".split(" "),
+		filter: function( event, original ) {
+
+			// Add which for key events
+			if ( event.which == null ) {
+				event.which = original.charCode != null ? original.charCode : original.keyCode;
+			}
+
+			return event;
+		}
+	},
+
+	mouseHooks: {
+		props: "button buttons clientX clientY fromElement offsetX offsetY pageX pageY screenX screenY toElement".split(" "),
+		filter: function( event, original ) {
+			var eventDoc, doc, body,
+				button = original.button,
+				fromElement = original.fromElement;
+
+			// Calculate pageX/Y if missing and clientX/Y available
+			if ( event.pageX == null && original.clientX != null ) {
+				eventDoc = event.target.ownerDocument || document;
+				doc = eventDoc.documentElement;
+				body = eventDoc.body;
+
+				event.pageX = original.clientX + ( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) - ( doc && doc.clientLeft || body && body.clientLeft || 0 );
+				event.pageY = original.clientY + ( doc && doc.scrollTop  || body && body.scrollTop  || 0 ) - ( doc && doc.clientTop  || body && body.clientTop  || 0 );
+			}
+
+			// Add relatedTarget, if necessary
+			if ( !event.relatedTarget && fromElement ) {
+				event.relatedTarget = fromElement === event.target ? original.toElement : fromElement;
+			}
+
+			// Add which for click: 1 === left; 2 === middle; 3 === right
+			// Note: button is not normalized, so don't use it
+			if ( !event.which && button !== undefined ) {
+				event.which = ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) );
+			}
+
+			return event;
+		}
+	},
+
+	fix: function( event ) {
+		if ( event[ jQuery.expando ] ) {
+			return event;
+		}
+
+		// Create a writable copy of the event object and normalize some properties
+		var i, prop,
+			originalEvent = event,
+			fixHook = jQuery.event.fixHooks[ event.type ] || {},
+			copy = fixHook.props ? this.props.concat( fixHook.props ) : this.props;
+
+		event = jQuery.Event( originalEvent );
+
+		for ( i = copy.length; i; ) {
+			prop = copy[ --i ];
+			event[ prop ] = originalEvent[ prop ];
+		}
+
+		// Fix target property, if necessary (#1925, IE 6/7/8 & Safari2)
+		if ( !event.target ) {
+			event.target = originalEvent.srcElement || document;
+		}
+
+		// Target should not be a text node (#504, Safari)
+		if ( event.target.nodeType === 3 ) {
+			event.target = event.target.parentNode;
+		}
+
+		// For mouse/key events, metaKey==false if it's undefined (#3368, #11328; IE6/7/8)
+		event.metaKey = !!event.metaKey;
+
+		return fixHook.filter? fixHook.filter( event, originalEvent ) : event;
+	},
+
+	special: {
+		load: {
+			// Prevent triggered image.load events from bubbling to window.load
+			noBubble: true
+		},
+
+		focus: {
+			delegateType: "focusin"
+		},
+		blur: {
+			delegateType: "focusout"
+		},
+
+		beforeunload: {
+			setup: function( data, namespaces, eventHandle ) {
+				// We only want to do this special case on windows
+				if ( jQuery.isWindow( this ) ) {
+					this.onbeforeunload = eventHandle;
+				}
+			},
+
+			teardown: function( namespaces, eventHandle ) {
+				if ( this.onbeforeunload === eventHandle ) {
+					this.onbeforeunload = null;
+				}
+			}
+		}
+	},
+
+	simulate: function( type, elem, event, bubble ) {
+		// Piggyback on a donor event to simulate a different one.
+		// Fake originalEvent to avoid donor's stopPropagation, but if the
+		// simulated event prevents default then we do the same on the donor.
+		var e = jQuery.extend(
+			new jQuery.Event(),
+			event,
+			{ type: type,
+				isSimulated: true,
+				originalEvent: {}
+			}
+		);
+		if ( bubble ) {
+			jQuery.event.trigger( e, null, elem );
+		} else {
+			jQuery.event.dispatch.call( elem, e );
+		}
+		if ( e.isDefaultPrevented() ) {
+			event.preventDefault();
+		}
+	}
+};
+
+// Some plugins are using, but it's undocumented/deprecated and will be removed.
+// The 1.7 special event interface should provide all the hooks needed now.
+jQuery.event.handle = jQuery.event.dispatch;
+
+jQuery.removeEvent = document.removeEventListener ?
+	function( elem, type, handle ) {
+		if ( elem.removeEventListener ) {
+			elem.removeEventListener( type, handle, false );
+		}
+	} :
+	function( elem, type, handle ) {
+		var name = "on" + type;
+
+		if ( elem.detachEvent ) {
+
+			// #8545, #7054, preventing memory leaks for custom events in IE6-8
+			// detachEvent needed property on element, by name of that event, to properly expose it to GC
+			if ( typeof elem[ name ] === "undefined" ) {
+				elem[ name ] = null;
+			}
+
+			elem.detachEvent( name, handle );
+		}
+	};
+
+jQuery.Event = function( src, props ) {
+	// Allow instantiation without the 'new' keyword
+	if ( !(this instanceof jQuery.Event) ) {
+		return new jQuery.Event( src, props );
+	}
+
+	// Event object
+	if ( src && src.type ) {
+		this.originalEvent = src;
+		this.type = src.type;
+
+		// Events bubbling up the document may have been marked as prevented
+		// by a handler lower down the tree; reflect the correct value.
+		this.isDefaultPrevented = ( src.defaultPrevented || src.returnValue === false ||
+			src.getPreventDefault && src.getPreventDefault() ) ? returnTrue : returnFalse;
+
+	// Event type
+	} else {
+		this.type = src;
+	}
+
+	// Put explicitly provided properties onto the event object
+	if ( props ) {
+		jQuery.extend( this, props );
+	}
+
+	// Create a timestamp if incoming event doesn't have one
+	this.timeStamp = src && src.timeStamp || jQuery.now();
+
+	// Mark it as fixed
+	this[ jQuery.expando ] = true;
+};
+
+function returnFalse() {
+	return false;
+}
+function returnTrue() {
+	return true;
+}
+
+// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
+// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
+jQuery.Event.prototype = {
+	preventDefault: function() {
+		this.isDefaultPrevented = returnTrue;
+
+		var e = this.originalEvent;
+		if ( !e ) {
+			return;
+		}
+
+		// if preventDefault exists run it on the original event
+		if ( e.preventDefault ) {
+			e.preventDefault();
+
+		// otherwise set the returnValue property of the original event to false (IE)
+		} else {
+			e.returnValue = false;
+		}
+	},
+	stopPropagation: function() {
+		this.isPropagationStopped = returnTrue;
+
+		var e = this.originalEvent;
+		if ( !e ) {
+			return;
+		}
+		// if stopPropagation exists run it on the original event
+		if ( e.stopPropagation ) {
+			e.stopPropagation();
+		}
+		// otherwise set the cancelBubble property of the original event to true (IE)
+		e.cancelBubble = true;
+	},
+	stopImmediatePropagation: function() {
+		this.isImmediatePropagationStopped = returnTrue;
+		this.stopPropagation();
+	},
+	isDefaultPrevented: returnFalse,
+	isPropagationStopped: returnFalse,
+	isImmediatePropagationStopped: returnFalse
+};
+
+// Create mouseenter/leave events using mouseover/out and event-time checks
+jQuery.each({
+	mouseenter: "mouseover",
+	mouseleave: "mouseout"
+}, function( orig, fix ) {
+	jQuery.event.special[ orig ] = {
+		delegateType: fix,
+		bindType: fix,
+
+		handle: function( event ) {
+			var ret,
+				target = this,
+				related = event.relatedTarget,
+				handleObj = event.handleObj,
+				selector = handleObj.selector;
+
+			// For mousenter/leave call the handler if related is outside the target.
+			// NB: No relatedTarget if the mouse left/entered the browser window
+			if ( !related || (related !== target && !jQuery.contains( target, related )) ) {
+				event.type = handleObj.origType;
+				ret = handleObj.handler.apply( this, arguments );
+				event.type = fix;
+			}
+			return ret;
+		}
+	};
+});
+
+// IE submit delegation
+if ( !jQuery.support.submitBubbles ) {
+
+	jQuery.event.special.submit = {
+		setup: function() {
+			// Only need this for delegated form submit events
+			if ( jQuery.nodeName( this, "form" ) ) {
+				return false;
+			}
+
+			// Lazy-add a submit handler when a descendant form may potentially be submitted
+			jQuery.event.add( this, "click._submit keypress._submit", function( e ) {
+				// Node name check avoids a VML-related crash in IE (#9807)
+				var elem = e.target,
+					form = jQuery.nodeName( elem, "input" ) || jQuery.nodeName( elem, "button" ) ? elem.form : undefined;
+				if ( form && !jQuery._data( form, "_submit_attached" ) ) {
+					jQuery.event.add( form, "submit._submit", function( event ) {
+						event._submit_bubble = true;
+					});
+					jQuery._data( form, "_submit_attached", true );
+				}
+			});
+			// return undefined since we don't need an event listener
+		},
+
+		postDispatch: function( event ) {
+			// If form was submitted by the user, bubble the event up the tree
+			if ( event._submit_bubble ) {
+				delete event._submit_bubble;
+				if ( this.parentNode && !event.isTrigger ) {
+					jQuery.event.simulate( "submit", this.parentNode, event, true );
+				}
+			}
+		},
+
+		teardown: function() {
+			// Only need this for delegated form submit events
+			if ( jQuery.nodeName( this, "form" ) ) {
+				return false;
+			}
+
+			// Remove delegated handlers; cleanData eventually reaps submit handlers attached above
+			jQuery.event.remove( this, "._submit" );
+		}
+	};
+}
+
+// IE change delegation and checkbox/radio fix
+if ( !jQuery.support.changeBubbles ) {
+
+	jQuery.event.special.change = {
+
+		setup: function() {
+
+			if ( rformElems.test( this.nodeName ) ) {
+				// IE doesn't fire change on a check/radio until blur; trigger it on click
+				// after a propertychange. Eat the blur-change in special.change.handle.
+				// This still fires onchange a second time for check/radio after blur.
+				if ( this.type === "checkbox" || this.type === "radio" ) {
+					jQuery.event.add( this, "propertychange._change", function( event ) {
+						if ( event.originalEvent.propertyName === "checked" ) {
+							this._just_changed = true;
+						}
+					});
+					jQuery.event.add( this, "click._change", function( event ) {
+						if ( this._just_changed && !event.isTrigger ) {
+							this._just_changed = false;
+						}
+						// Allow triggered, simulated change events (#11500)
+						jQuery.event.simulate( "change", this, event, true );
+					});
+				}
+				return false;
+			}
+			// Delegated event; lazy-add a change handler on descendant inputs
+			jQuery.event.add( this, "beforeactivate._change", function( e ) {
+				var elem = e.target;
+
+				if ( rformElems.test( elem.nodeName ) && !jQuery._data( elem, "_change_attached" ) ) {
+					jQuery.event.add( elem, "change._change", function( event ) {
+						if ( this.parentNode && !event.isSimulated && !event.isTrigger ) {
+							jQuery.event.simulate( "change", this.parentNode, event, true );
+						}
+					});
+					jQuery._data( elem, "_change_attached", true );
+				}
+			});
+		},
+
+		handle: function( event ) {
+			var elem = event.target;
+
+			// Swallow native change events from checkbox/radio, we already triggered them above
+			if ( this !== elem || event.isSimulated || event.isTrigger || (elem.type !== "radio" && elem.type !== "checkbox") ) {
+				return event.handleObj.handler.apply( this, arguments );
+			}
+		},
+
+		teardown: function() {
+			jQuery.event.remove( this, "._change" );
+
+			return !rformElems.test( this.nodeName );
+		}
+	};
+}
+
+// Create "bubbling" focus and blur events
+if ( !jQuery.support.focusinBubbles ) {
+	jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) {
+
+		// Attach a single capturing handler while someone wants focusin/focusout
+		var attaches = 0,
+			handler = function( event ) {
+				jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ), true );
+			};
+
+		jQuery.event.special[ fix ] = {
+			setup: function() {
+				if ( attaches++ === 0 ) {
+					document.addEventListener( orig, handler, true );
+				}
+			},
+			teardown: function() {
+				if ( --attaches === 0 ) {
+					document.removeEventListener( orig, handler, true );
+				}
+			}
+		};
+	});
+}
+
+jQuery.fn.extend({
+
+	on: function( types, selector, data, fn, /*INTERNAL*/ one ) {
+		var origFn, type;
+
+		// Types can be a map of types/handlers
+		if ( typeof types === "object" ) {
+			// ( types-Object, selector, data )
+			if ( typeof selector !== "string" ) { // && selector != null
+				// ( types-Object, data )
+				data = data || selector;
+				selector = undefined;
+			}
+			for ( type in types ) {
+				this.on( type, selector, data, types[ type ], one );
+			}
+			return this;
+		}
+
+		if ( data == null && fn == null ) {
+			// ( types, fn )
+			fn = selector;
+			data = selector = undefined;
+		} else if ( fn == null ) {
+			if ( typeof selector === "string" ) {
+				// ( types, selector, fn )
+				fn = data;
+				data = undefined;
+			} else {
+				// ( types, data, fn )
+				fn = data;
+				data = selector;
+				selector = undefined;
+			}
+		}
+		if ( fn === false ) {
+			fn = returnFalse;
+		} else if ( !fn ) {
+			return this;
+		}
+
+		if ( one === 1 ) {
+			origFn = fn;
+			fn = function( event ) {
+				// Can use an empty set, since event contains the info
+				jQuery().off( event );
+				return origFn.apply( this, arguments );
+			};
+			// Use same guid so caller can remove using origFn
+			fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
+		}
+		return this.each( function() {
+			jQuery.event.add( this, types, fn, data, selector );
+		});
+	},
+	one: function( types, selector, data, fn ) {
+		return this.on( types, selector, data, fn, 1 );
+	},
+	off: function( types, selector, fn ) {
+		var handleObj, type;
+		if ( types && types.preventDefault && types.handleObj ) {
+			// ( event )  dispatched jQuery.Event
+			handleObj = types.handleObj;
+			jQuery( types.delegateTarget ).off(
+				handleObj.namespace ? handleObj.origType + "." + handleObj.namespace : handleObj.origType,
+				handleObj.selector,
+				handleObj.handler
+			);
+			return this;
+		}
+		if ( typeof types === "object" ) {
+			// ( types-object [, selector] )
+			for ( type in types ) {
+				this.off( type, selector, types[ type ] );
+			}
+			return this;
+		}
+		if ( selector === false || typeof selector === "function" ) {
+			// ( types [, fn] )
+			fn = selector;
+			selector = undefined;
+		}
+		if ( fn === false ) {
+			fn = returnFalse;
+		}
+		return this.each(function() {
+			jQuery.event.remove( this, types, fn, selector );
+		});
+	},
+
+	bind: function( types, data, fn ) {
+		return this.on( types, null, data, fn );
+	},
+	unbind: function( types, fn ) {
+		return this.off( types, null, fn );
+	},
+
+	live: function( types, data, fn ) {
+		jQuery( this.context ).on( types, this.selector, data, fn );
+		return this;
+	},
+	die: function( types, fn ) {
+		jQuery( this.context ).off( types, this.selector || "**", fn );
+		return this;
+	},
+
+	delegate: function( selector, types, data, fn ) {
+		return this.on( types, selector, data, fn );
+	},
+	undelegate: function( selector, types, fn ) {
+		// ( namespace ) or ( selector, types [, fn] )
+		return arguments.length === 1 ? this.off( selector, "**" ) : this.off( types, selector || "**", fn );
+	},
+
+	trigger: function( type, data ) {
+		return this.each(function() {
+			jQuery.event.trigger( type, data, this );
+		});
+	},
+	triggerHandler: function( type, data ) {
+		if ( this[0] ) {
+			return jQuery.event.trigger( type, data, this[0], true );
+		}
+	},
+
+	toggle: function( fn ) {
+		// Save reference to arguments for access in closure
+		var args = arguments,
+			guid = fn.guid || jQuery.guid++,
+			i = 0,
+			toggler = function( event ) {
+				// Figure out which function to execute
+				var lastToggle = ( jQuery._data( this, "lastToggle" + fn.guid ) || 0 ) % i;
+				jQuery._data( this, "lastToggle" + fn.guid, lastToggle + 1 );
+
+				// Make sure that clicks stop
+				event.preventDefault();
+
+				// and execute the function
+				return args[ lastToggle ].apply( this, arguments ) || false;
+			};
+
+		// link all the functions, so any of them can unbind this click handler
+		toggler.guid = guid;
+		while ( i < args.length ) {
+			args[ i++ ].guid = guid;
+		}
+
+		return this.click( toggler );
+	},
+
+	hover: function( fnOver, fnOut ) {
+		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
+	}
+});
+
+jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblclick " +
+	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
+	"change select submit keydown keypress keyup error contextmenu").split(" "), function( i, name ) {
+
+	// Handle event binding
+	jQuery.fn[ name ] = function( data, fn ) {
+		if ( fn == null ) {
+			fn = data;
+			data = null;
+		}
+
+		return arguments.length > 0 ?
+			this.on( name, null, data, fn ) :
+			this.trigger( name );
+	};
+
+	if ( rkeyEvent.test( name ) ) {
+		jQuery.event.fixHooks[ name ] = jQuery.event.keyHooks;
+	}
+
+	if ( rmouseEvent.test( name ) ) {
+		jQuery.event.fixHooks[ name ] = jQuery.event.mouseHooks;
+	}
+});
+/*!

+ * Sizzle CSS Selector Engine

+ * Copyright 2012 jQuery Foundation and other contributors

+ * Released under the MIT license

+ * http://sizzlejs.com/

+ */

+(function( window, undefined ) {

+

+var cachedruns,

+	assertGetIdNotName,

+	Expr,

+	getText,

+	isXML,

+	contains,

+	compile,

+	sortOrder,

+	hasDuplicate,

+	outermostContext,

+

+	baseHasDuplicate = true,

+	strundefined = "undefined",

+

+	expando = ( "sizcache" + Math.random() ).replace( ".", "" ),

+

+	Token = String,

+	document = window.document,

+	docElem = document.documentElement,

+	dirruns = 0,

+	done = 0,

+	pop = [].pop,

+	push = [].push,

+	slice = [].slice,

+	// Use a stripped-down indexOf if a native one is unavailable

+	indexOf = [].indexOf || function( elem ) {

+		var i = 0,

+			len = this.length;

+		for ( ; i < len; i++ ) {

+			if ( this[i] === elem ) {

+				return i;

+			}

+		}

+		return -1;

+	},

+

+	// Augment a function for special use by Sizzle

+	markFunction = function( fn, value ) {

+		fn[ expando ] = value == null || value;

+		return fn;

+	},

+

+	createCache = function() {

+		var cache = {},

+			keys = [];

+

+		return markFunction(function( key, value ) {

+			// Only keep the most recent entries

+			if ( keys.push( key ) > Expr.cacheLength ) {

+				delete cache[ keys.shift() ];

+			}

+

+			// Retrieve with (key + " ") to avoid collision with native Object.prototype properties (see Issue #157)

+			return (cache[ key + " " ] = value);

+		}, cache );

+	},

+

+	classCache = createCache(),

+	tokenCache = createCache(),

+	compilerCache = createCache(),

+

+	// Regex

+

+	// Whitespace characters http://www.w3.org/TR/css3-selectors/#whitespace

+	whitespace = "[\\x20\\t\\r\\n\\f]",

+	// http://www.w3.org/TR/css3-syntax/#characters

+	characterEncoding = "(?:\\\\.|[-\\w]|[^\\x00-\\xa0])+",

+

+	// Loosely modeled on CSS identifier characters

+	// An unquoted value should be a CSS identifier (http://www.w3.org/TR/css3-selectors/#attribute-selectors)

+	// Proper syntax: http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier

+	identifier = characterEncoding.replace( "w", "w#" ),

+

+	// Acceptable operators http://www.w3.org/TR/selectors/#attribute-selectors

+	operators = "([*^$|!~]?=)",

+	attributes = "\\[" + whitespace + "*(" + characterEncoding + ")" + whitespace +

+		"*(?:" + operators + whitespace + "*(?:(['\"])((?:\\\\.|[^\\\\])*?)\\3|(" + identifier + ")|)|)" + whitespace + "*\\]",

+

+	// Prefer arguments not in parens/brackets,

+	//   then attribute selectors and non-pseudos (denoted by :),

+	//   then anything else

+	// These preferences are here to reduce the number of selectors

+	//   needing tokenize in the PSEUDO preFilter

+	pseudos = ":(" + characterEncoding + ")(?:\\((?:(['\"])((?:\\\\.|[^\\\\])*?)\\2|([^()[\\]]*|(?:(?:" + attributes + ")|[^:]|\\\\.)*|.*))\\)|)",

+

+	// For matchExpr.POS and matchExpr.needsContext

+	pos = ":(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace +

+		"*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)",

+

+	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter

+	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),

+

+	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),

+	rcombinators = new RegExp( "^" + whitespace + "*([\\x20\\t\\r\\n\\f>+~])" + whitespace + "*" ),

+	rpseudo = new RegExp( pseudos ),

+

+	// Easily-parseable/retrievable ID or TAG or CLASS selectors

+	rquickExpr = /^(?:#([\w\-]+)|(\w+)|\.([\w\-]+))$/,

+

+	rnot = /^:not/,

+	rsibling = /[\x20\t\r\n\f]*[+~]/,

+	rendsWithNot = /:not\($/,

+

+	rheader = /h\d/i,

+	rinputs = /input|select|textarea|button/i,

+

+	rbackslash = /\\(?!\\)/g,

+

+	matchExpr = {

+		"ID": new RegExp( "^#(" + characterEncoding + ")" ),

+		"CLASS": new RegExp( "^\\.(" + characterEncoding + ")" ),

+		"NAME": new RegExp( "^\\[name=['\"]?(" + characterEncoding + ")['\"]?\\]" ),

+		"TAG": new RegExp( "^(" + characterEncoding.replace( "w", "w*" ) + ")" ),

+		"ATTR": new RegExp( "^" + attributes ),

+		"PSEUDO": new RegExp( "^" + pseudos ),

+		"POS": new RegExp( pos, "i" ),

+		"CHILD": new RegExp( "^:(only|nth|first|last)-child(?:\\(" + whitespace +

+			"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +

+			"*(\\d+)|))" + whitespace + "*\\)|)", "i" ),

+		// For use in libraries implementing .is()

+		"needsContext": new RegExp( "^" + whitespace + "*[>+~]|" + pos, "i" )

+	},

+

+	// Support

+

+	// Used for testing something on an element

+	assert = function( fn ) {

+		var div = document.createElement("div");

+

+		try {

+			return fn( div );

+		} catch (e) {

+			return false;

+		} finally {

+			// release memory in IE

+			div = null;

+		}

+	},

+

+	// Check if getElementsByTagName("*") returns only elements

+	assertTagNameNoComments = assert(function( div ) {

+		div.appendChild( document.createComment("") );

+		return !div.getElementsByTagName("*").length;

+	}),

+

+	// Check if getAttribute returns normalized href attributes

+	assertHrefNotNormalized = assert(function( div ) {

+		div.innerHTML = "<a href='#'></a>";

+		return div.firstChild && typeof div.firstChild.getAttribute !== strundefined &&

+			div.firstChild.getAttribute("href") === "#";

+	}),

+

+	// Check if attributes should be retrieved by attribute nodes

+	assertAttributes = assert(function( div ) {

+		div.innerHTML = "<select></select>";

+		var type = typeof div.lastChild.getAttribute("multiple");

+		// IE8 returns a string for some attributes even when not present

+		return type !== "boolean" && type !== "string";

+	}),

+

+	// Check if getElementsByClassName can be trusted

+	assertUsableClassName = assert(function( div ) {

+		// Opera can't find a second classname (in 9.6)

+		div.innerHTML = "<div class='hidden e'></div><div class='hidden'></div>";

+		if ( !div.getElementsByClassName || !div.getElementsByClassName("e").length ) {

+			return false;

+		}

+

+		// Safari 3.2 caches class attributes and doesn't catch changes

+		div.lastChild.className = "e";

+		return div.getElementsByClassName("e").length === 2;

+	}),

+

+	// Check if getElementById returns elements by name

+	// Check if getElementsByName privileges form controls or returns elements by ID

+	assertUsableName = assert(function( div ) {

+		// Inject content

+		div.id = expando + 0;

+		div.innerHTML = "<a name='" + expando + "'></a><div name='" + expando + "'></div>";

+		docElem.insertBefore( div, docElem.firstChild );

+

+		// Test

+		var pass = document.getElementsByName &&

+			// buggy browsers will return fewer than the correct 2

+			document.getElementsByName( expando ).length === 2 +

+			// buggy browsers will return more than the correct 0

+			document.getElementsByName( expando + 0 ).length;

+		assertGetIdNotName = !document.getElementById( expando );

+

+		// Cleanup

+		docElem.removeChild( div );

+

+		return pass;

+	});

+

+// If slice is not available, provide a backup

+try {

+	slice.call( docElem.childNodes, 0 )[0].nodeType;

+} catch ( e ) {

+	slice = function( i ) {

+		var elem,

+			results = [];

+		for ( ; (elem = this[i]); i++ ) {

+			results.push( elem );

+		}

+		return results;

+	};

+}

+

+function Sizzle( selector, context, results, seed ) {

+	results = results || [];

+	context = context || document;

+	var match, elem, xml, m,

+		nodeType = context.nodeType;

+

+	if ( !selector || typeof selector !== "string" ) {

+		return results;

+	}

+

+	if ( nodeType !== 1 && nodeType !== 9 ) {

+		return [];

+	}

+

+	xml = isXML( context );

+

+	if ( !xml && !seed ) {

+		if ( (match = rquickExpr.exec( selector )) ) {

+			// Speed-up: Sizzle("#ID")

+			if ( (m = match[1]) ) {

+				if ( nodeType === 9 ) {

+					elem = context.getElementById( m );

+					// Check parentNode to catch when Blackberry 4.6 returns

+					// nodes that are no longer in the document #6963

+					if ( elem && elem.parentNode ) {

+						// Handle the case where IE, Opera, and Webkit return items

+						// by name instead of ID

+						if ( elem.id === m ) {

+							results.push( elem );

+							return results;

+						}

+					} else {

+						return results;

+					}

+				} else {

+					// Context is not a document

+					if ( context.ownerDocument && (elem = context.ownerDocument.getElementById( m )) &&

+						contains( context, elem ) && elem.id === m ) {

+						results.push( elem );

+						return results;

+					}

+				}

+

+			// Speed-up: Sizzle("TAG")

+			} else if ( match[2] ) {

+				push.apply( results, slice.call(context.getElementsByTagName( selector ), 0) );

+				return results;

+

+			// Speed-up: Sizzle(".CLASS")

+			} else if ( (m = match[3]) && assertUsableClassName && context.getElementsByClassName ) {

+				push.apply( results, slice.call(context.getElementsByClassName( m ), 0) );

+				return results;

+			}

+		}

+	}

+

+	// All others

+	return select( selector.replace( rtrim, "$1" ), context, results, seed, xml );

+}

+

+Sizzle.matches = function( expr, elements ) {

+	return Sizzle( expr, null, null, elements );

+};

+

+Sizzle.matchesSelector = function( elem, expr ) {

+	return Sizzle( expr, null, null, [ elem ] ).length > 0;

+};

+

+// Returns a function to use in pseudos for input types

+function createInputPseudo( type ) {

+	return function( elem ) {

+		var name = elem.nodeName.toLowerCase();

+		return name === "input" && elem.type === type;

+	};

+}

+

+// Returns a function to use in pseudos for buttons

+function createButtonPseudo( type ) {

+	return function( elem ) {

+		var name = elem.nodeName.toLowerCase();

+		return (name === "input" || name === "button") && elem.type === type;

+	};

+}

+

+// Returns a function to use in pseudos for positionals

+function createPositionalPseudo( fn ) {

+	return markFunction(function( argument ) {

+		argument = +argument;

+		return markFunction(function( seed, matches ) {

+			var j,

+				matchIndexes = fn( [], seed.length, argument ),

+				i = matchIndexes.length;

+

+			// Match elements found at the specified indexes

+			while ( i-- ) {

+				if ( seed[ (j = matchIndexes[i]) ] ) {

+					seed[j] = !(matches[j] = seed[j]);

+				}

+			}

+		});

+	});

+}

+

+/**

+ * Utility function for retrieving the text value of an array of DOM nodes

+ * @param {Array|Element} elem

+ */

+getText = Sizzle.getText = function( elem ) {

+	var node,

+		ret = "",

+		i = 0,

+		nodeType = elem.nodeType;

+

+	if ( nodeType ) {

+		if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {

+			// Use textContent for elements

+			// innerText usage removed for consistency of new lines (see #11153)

+			if ( typeof elem.textContent === "string" ) {

+				return elem.textContent;

+			} else {

+				// Traverse its children

+				for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {

+					ret += getText( elem );

+				}

+			}

+		} else if ( nodeType === 3 || nodeType === 4 ) {

+			return elem.nodeValue;

+		}

+		// Do not include comment or processing instruction nodes

+	} else {

+

+		// If no nodeType, this is expected to be an array

+		for ( ; (node = elem[i]); i++ ) {

+			// Do not traverse comment nodes

+			ret += getText( node );

+		}

+	}

+	return ret;

+};

+

+isXML = Sizzle.isXML = function( elem ) {

+	// documentElement is verified for cases where it doesn't yet exist

+	// (such as loading iframes in IE - #4833)

+	var documentElement = elem && (elem.ownerDocument || elem).documentElement;

+	return documentElement ? documentElement.nodeName !== "HTML" : false;

+};

+

+// Element contains another

+contains = Sizzle.contains = docElem.contains ?

+	function( a, b ) {

+		var adown = a.nodeType === 9 ? a.documentElement : a,

+			bup = b && b.parentNode;

+		return a === bup || !!( bup && bup.nodeType === 1 && adown.contains && adown.contains(bup) );

+	} :

+	docElem.compareDocumentPosition ?

+	function( a, b ) {

+		return b && !!( a.compareDocumentPosition( b ) & 16 );

+	} :

+	function( a, b ) {

+		while ( (b = b.parentNode) ) {

+			if ( b === a ) {

+				return true;

+			}

+		}

+		return false;

+	};

+

+Sizzle.attr = function( elem, name ) {

+	var val,

+		xml = isXML( elem );

+

+	if ( !xml ) {

+		name = name.toLowerCase();

+	}

+	if ( (val = Expr.attrHandle[ name ]) ) {

+		return val( elem );

+	}

+	if ( xml || assertAttributes ) {

+		return elem.getAttribute( name );

+	}

+	val = elem.getAttributeNode( name );

+	return val ?

+		typeof elem[ name ] === "boolean" ?

+			elem[ name ] ? name : null :

+			val.specified ? val.value : null :

+		null;

+};

+

+Expr = Sizzle.selectors = {

+

+	// Can be adjusted by the user

+	cacheLength: 50,

+

+	createPseudo: markFunction,

+

+	match: matchExpr,

+

+	// IE6/7 return a modified href

+	attrHandle: assertHrefNotNormalized ?

+		{} :

+		{

+			"href": function( elem ) {

+				return elem.getAttribute( "href", 2 );

+			},

+			"type": function( elem ) {

+				return elem.getAttribute("type");

+			}

+		},

+

+	find: {

+		"ID": assertGetIdNotName ?

+			function( id, context, xml ) {

+				if ( typeof context.getElementById !== strundefined && !xml ) {

+					var m = context.getElementById( id );

+					// Check parentNode to catch when Blackberry 4.6 returns

+					// nodes that are no longer in the document #6963

+					return m && m.parentNode ? [m] : [];

+				}

+			} :

+			function( id, context, xml ) {

+				if ( typeof context.getElementById !== strundefined && !xml ) {

+					var m = context.getElementById( id );

+

+					return m ?

+						m.id === id || typeof m.getAttributeNode !== strundefined && m.getAttributeNode("id").value === id ?

+							[m] :

+							undefined :

+						[];

+				}

+			},

+

+		"TAG": assertTagNameNoComments ?

+			function( tag, context ) {

+				if ( typeof context.getElementsByTagName !== strundefined ) {

+					return context.getElementsByTagName( tag );

+				}

+			} :

+			function( tag, context ) {

+				var results = context.getElementsByTagName( tag );

+

+				// Filter out possible comments

+				if ( tag === "*" ) {

+					var elem,

+						tmp = [],

+						i = 0;

+

+					for ( ; (elem = results[i]); i++ ) {

+						if ( elem.nodeType === 1 ) {

+							tmp.push( elem );

+						}

+					}

+

+					return tmp;

+				}

+				return results;

+			},

+

+		"NAME": assertUsableName && function( tag, context ) {

+			if ( typeof context.getElementsByName !== strundefined ) {

+				return context.getElementsByName( name );

+			}

+		},

+

+		"CLASS": assertUsableClassName && function( className, context, xml ) {

+			if ( typeof context.getElementsByClassName !== strundefined && !xml ) {

+				return context.getElementsByClassName( className );

+			}

+		}

+	},

+

+	relative: {

+		">": { dir: "parentNode", first: true },

+		" ": { dir: "parentNode" },

+		"+": { dir: "previousSibling", first: true },

+		"~": { dir: "previousSibling" }

+	},

+

+	preFilter: {

+		"ATTR": function( match ) {

+			match[1] = match[1].replace( rbackslash, "" );

+

+			// Move the given value to match[3] whether quoted or unquoted

+			match[3] = ( match[4] || match[5] || "" ).replace( rbackslash, "" );

+

+			if ( match[2] === "~=" ) {

+				match[3] = " " + match[3] + " ";

+			}

+

+			return match.slice( 0, 4 );

+		},

+

+		"CHILD": function( match ) {

+			/* matches from matchExpr["CHILD"]

+				1 type (only|nth|...)

+				2 argument (even|odd|\d*|\d*n([+-]\d+)?|...)

+				3 xn-component of xn+y argument ([+-]?\d*n|)

+				4 sign of xn-component

+				5 x of xn-component

+				6 sign of y-component

+				7 y of y-component

+			*/

+			match[1] = match[1].toLowerCase();

+

+			if ( match[1] === "nth" ) {

+				// nth-child requires argument

+				if ( !match[2] ) {

+					Sizzle.error( match[0] );

+				}

+

+				// numeric x and y parameters for Expr.filter.CHILD

+				// remember that false/true cast respectively to 0/1

+				match[3] = +( match[3] ? match[4] + (match[5] || 1) : 2 * ( match[2] === "even" || match[2] === "odd" ) );

+				match[4] = +( ( match[6] + match[7] ) || match[2] === "odd" );

+

+			// other types prohibit arguments

+			} else if ( match[2] ) {

+				Sizzle.error( match[0] );

+			}

+

+			return match;

+		},

+

+		"PSEUDO": function( match ) {

+			var unquoted, excess;

+			if ( matchExpr["CHILD"].test( match[0] ) ) {

+				return null;

+			}

+

+			if ( match[3] ) {

+				match[2] = match[3];

+			} else if ( (unquoted = match[4]) ) {

+				// Only check arguments that contain a pseudo

+				if ( rpseudo.test(unquoted) &&

+					// Get excess from tokenize (recursively)

+					(excess = tokenize( unquoted, true )) &&

+					// advance to the next closing parenthesis

+					(excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {

+

+					// excess is a negative index

+					unquoted = unquoted.slice( 0, excess );

+					match[0] = match[0].slice( 0, excess );

+				}

+				match[2] = unquoted;

+			}

+

+			// Return only captures needed by the pseudo filter method (type and argument)

+			return match.slice( 0, 3 );

+		}

+	},

+

+	filter: {

+		"ID": assertGetIdNotName ?

+			function( id ) {

+				id = id.replace( rbackslash, "" );

+				return function( elem ) {

+					return elem.getAttribute("id") === id;

+				};

+			} :

+			function( id ) {

+				id = id.replace( rbackslash, "" );

+				return function( elem ) {

+					var node = typeof elem.getAttributeNode !== strundefined && elem.getAttributeNode("id");

+					return node && node.value === id;

+				};

+			},

+

+		"TAG": function( nodeName ) {

+			if ( nodeName === "*" ) {

+				return function() { return true; };

+			}

+			nodeName = nodeName.replace( rbackslash, "" ).toLowerCase();

+

+			return function( elem ) {

+				return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;

+			};

+		},

+

+		"CLASS": function( className ) {

+			var pattern = classCache[ expando ][ className + " " ];

+

+			return pattern ||

+				(pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&

+				classCache( className, function( elem ) {

+					return pattern.test( elem.className || (typeof elem.getAttribute !== strundefined && elem.getAttribute("class")) || "" );

+				});

+		},

+

+		"ATTR": function( name, operator, check ) {

+			return function( elem, context ) {

+				var result = Sizzle.attr( elem, name );

+

+				if ( result == null ) {

+					return operator === "!=";

+				}

+				if ( !operator ) {

+					return true;

+				}

+

+				result += "";

+

+				return operator === "=" ? result === check :

+					operator === "!=" ? result !== check :

+					operator === "^=" ? check && result.indexOf( check ) === 0 :

+					operator === "*=" ? check && result.indexOf( check ) > -1 :

+					operator === "$=" ? check && result.substr( result.length - check.length ) === check :

+					operator === "~=" ? ( " " + result + " " ).indexOf( check ) > -1 :

+					operator === "|=" ? result === check || result.substr( 0, check.length + 1 ) === check + "-" :

+					false;

+			};

+		},

+

+		"CHILD": function( type, argument, first, last ) {

+

+			if ( type === "nth" ) {

+				return function( elem ) {

+					var node, diff,

+						parent = elem.parentNode;

+

+					if ( first === 1 && last === 0 ) {

+						return true;

+					}

+

+					if ( parent ) {

+						diff = 0;

+						for ( node = parent.firstChild; node; node = node.nextSibling ) {

+							if ( node.nodeType === 1 ) {

+								diff++;

+								if ( elem === node ) {

+									break;

+								}

+							}

+						}

+					}

+

+					// Incorporate the offset (or cast to NaN), then check against cycle size

+					diff -= last;

+					return diff === first || ( diff % first === 0 && diff / first >= 0 );

+				};

+			}

+

+			return function( elem ) {

+				var node = elem;

+

+				switch ( type ) {

+					case "only":

+					case "first":

+						while ( (node = node.previousSibling) ) {

+							if ( node.nodeType === 1 ) {

+								return false;

+							}

+						}

+

+						if ( type === "first" ) {

+							return true;

+						}

+

+						node = elem;

+

+						/* falls through */

+					case "last":

+						while ( (node = node.nextSibling) ) {

+							if ( node.nodeType === 1 ) {

+								return false;

+							}

+						}

+

+						return true;

+				}

+			};

+		},

+

+		"PSEUDO": function( pseudo, argument ) {

+			// pseudo-class names are case-insensitive

+			// http://www.w3.org/TR/selectors/#pseudo-classes

+			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters

+			// Remember that setFilters inherits from pseudos

+			var args,

+				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||

+					Sizzle.error( "unsupported pseudo: " + pseudo );

+

+			// The user may use createPseudo to indicate that

+			// arguments are needed to create the filter function

+			// just as Sizzle does

+			if ( fn[ expando ] ) {

+				return fn( argument );

+			}

+

+			// But maintain support for old signatures

+			if ( fn.length > 1 ) {

+				args = [ pseudo, pseudo, "", argument ];

+				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?

+					markFunction(function( seed, matches ) {

+						var idx,

+							matched = fn( seed, argument ),

+							i = matched.length;

+						while ( i-- ) {

+							idx = indexOf.call( seed, matched[i] );

+							seed[ idx ] = !( matches[ idx ] = matched[i] );

+						}

+					}) :

+					function( elem ) {

+						return fn( elem, 0, args );

+					};

+			}

+

+			return fn;

+		}

+	},

+

+	pseudos: {

+		"not": markFunction(function( selector ) {

+			// Trim the selector passed to compile

+			// to avoid treating leading and trailing

+			// spaces as combinators

+			var input = [],

+				results = [],

+				matcher = compile( selector.replace( rtrim, "$1" ) );

+

+			return matcher[ expando ] ?

+				markFunction(function( seed, matches, context, xml ) {

+					var elem,

+						unmatched = matcher( seed, null, xml, [] ),

+						i = seed.length;

+

+					// Match elements unmatched by `matcher`

+					while ( i-- ) {

+						if ( (elem = unmatched[i]) ) {

+							seed[i] = !(matches[i] = elem);

+						}

+					}

+				}) :

+				function( elem, context, xml ) {

+					input[0] = elem;

+					matcher( input, null, xml, results );

+					return !results.pop();

+				};

+		}),

+

+		"has": markFunction(function( selector ) {

+			return function( elem ) {

+				return Sizzle( selector, elem ).length > 0;

+			};

+		}),

+

+		"contains": markFunction(function( text ) {

+			return function( elem ) {

+				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;

+			};

+		}),

+

+		"enabled": function( elem ) {

+			return elem.disabled === false;

+		},

+

+		"disabled": function( elem ) {

+			return elem.disabled === true;

+		},

+

+		"checked": function( elem ) {

+			// In CSS3, :checked should return both checked and selected elements

+			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked

+			var nodeName = elem.nodeName.toLowerCase();

+			return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);

+		},

+

+		"selected": function( elem ) {

+			// Accessing this property makes selected-by-default

+			// options in Safari work properly

+			if ( elem.parentNode ) {

+				elem.parentNode.selectedIndex;

+			}

+

+			return elem.selected === true;

+		},

+

+		"parent": function( elem ) {

+			return !Expr.pseudos["empty"]( elem );

+		},

+

+		"empty": function( elem ) {

+			// http://www.w3.org/TR/selectors/#empty-pseudo

+			// :empty is only affected by element nodes and content nodes(including text(3), cdata(4)),

+			//   not comment, processing instructions, or others

+			// Thanks to Diego Perini for the nodeName shortcut

+			//   Greater than "@" means alpha characters (specifically not starting with "#" or "?")

+			var nodeType;

+			elem = elem.firstChild;

+			while ( elem ) {

+				if ( elem.nodeName > "@" || (nodeType = elem.nodeType) === 3 || nodeType === 4 ) {

+					return false;

+				}

+				elem = elem.nextSibling;

+			}

+			return true;

+		},

+

+		"header": function( elem ) {

+			return rheader.test( elem.nodeName );

+		},

+

+		"text": function( elem ) {

+			var type, attr;

+			// IE6 and 7 will map elem.type to 'text' for new HTML5 types (search, etc)

+			// use getAttribute instead to test this case

+			return elem.nodeName.toLowerCase() === "input" &&

+				(type = elem.type) === "text" &&

+				( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === type );

+		},

+

+		// Input types

+		"radio": createInputPseudo("radio"),

+		"checkbox": createInputPseudo("checkbox"),

+		"file": createInputPseudo("file"),

+		"password": createInputPseudo("password"),

+		"image": createInputPseudo("image"),

+

+		"submit": createButtonPseudo("submit"),

+		"reset": createButtonPseudo("reset"),

+

+		"button": function( elem ) {

+			var name = elem.nodeName.toLowerCase();

+			return name === "input" && elem.type === "button" || name === "button";

+		},

+

+		"input": function( elem ) {

+			return rinputs.test( elem.nodeName );

+		},

+

+		"focus": function( elem ) {

+			var doc = elem.ownerDocument;

+			return elem === doc.activeElement && (!doc.hasFocus || doc.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);

+		},

+

+		"active": function( elem ) {

+			return elem === elem.ownerDocument.activeElement;

+		},

+

+		// Positional types

+		"first": createPositionalPseudo(function() {

+			return [ 0 ];

+		}),

+

+		"last": createPositionalPseudo(function( matchIndexes, length ) {

+			return [ length - 1 ];

+		}),

+

+		"eq": createPositionalPseudo(function( matchIndexes, length, argument ) {

+			return [ argument < 0 ? argument + length : argument ];

+		}),

+

+		"even": createPositionalPseudo(function( matchIndexes, length ) {

+			for ( var i = 0; i < length; i += 2 ) {

+				matchIndexes.push( i );

+			}

+			return matchIndexes;

+		}),

+

+		"odd": createPositionalPseudo(function( matchIndexes, length ) {

+			for ( var i = 1; i < length; i += 2 ) {

+				matchIndexes.push( i );

+			}

+			return matchIndexes;

+		}),

+

+		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {

+			for ( var i = argument < 0 ? argument + length : argument; --i >= 0; ) {

+				matchIndexes.push( i );

+			}

+			return matchIndexes;

+		}),

+

+		"gt": createPositionalPseudo(function( matchIndexes, length, argument ) {

+			for ( var i = argument < 0 ? argument + length : argument; ++i < length; ) {

+				matchIndexes.push( i );

+			}

+			return matchIndexes;

+		})

+	}

+};

+

+function siblingCheck( a, b, ret ) {

+	if ( a === b ) {

+		return ret;

+	}

+

+	var cur = a.nextSibling;

+

+	while ( cur ) {

+		if ( cur === b ) {

+			return -1;

+		}

+

+		cur = cur.nextSibling;

+	}

+

+	return 1;

+}

+

+sortOrder = docElem.compareDocumentPosition ?

+	function( a, b ) {

+		if ( a === b ) {

+			hasDuplicate = true;

+			return 0;

+		}

+

+		return ( !a.compareDocumentPosition || !b.compareDocumentPosition ?

+			a.compareDocumentPosition :

+			a.compareDocumentPosition(b) & 4

+		) ? -1 : 1;

+	} :

+	function( a, b ) {

+		// The nodes are identical, we can exit early

+		if ( a === b ) {

+			hasDuplicate = true;

+			return 0;

+

+		// Fallback to using sourceIndex (in IE) if it's available on both nodes

+		} else if ( a.sourceIndex && b.sourceIndex ) {

+			return a.sourceIndex - b.sourceIndex;

+		}

+

+		var al, bl,

+			ap = [],

+			bp = [],

+			aup = a.parentNode,

+			bup = b.parentNode,

+			cur = aup;

+

+		// If the nodes are siblings (or identical) we can do a quick check

+		if ( aup === bup ) {

+			return siblingCheck( a, b );

+

+		// If no parents were found then the nodes are disconnected

+		} else if ( !aup ) {

+			return -1;

+

+		} else if ( !bup ) {

+			return 1;

+		}

+

+		// Otherwise they're somewhere else in the tree so we need

+		// to build up a full list of the parentNodes for comparison

+		while ( cur ) {

+			ap.unshift( cur );

+			cur = cur.parentNode;

+		}

+

+		cur = bup;

+

+		while ( cur ) {

+			bp.unshift( cur );

+			cur = cur.parentNode;

+		}

+

+		al = ap.length;

+		bl = bp.length;

+

+		// Start walking down the tree looking for a discrepancy

+		for ( var i = 0; i < al && i < bl; i++ ) {

+			if ( ap[i] !== bp[i] ) {

+				return siblingCheck( ap[i], bp[i] );

+			}

+		}

+

+		// We ended someplace up the tree so do a sibling check

+		return i === al ?

+			siblingCheck( a, bp[i], -1 ) :

+			siblingCheck( ap[i], b, 1 );

+	};

+

+// Always assume the presence of duplicates if sort doesn't

+// pass them to our comparison function (as in Google Chrome).

+[0, 0].sort( sortOrder );

+baseHasDuplicate = !hasDuplicate;

+

+// Document sorting and removing duplicates

+Sizzle.uniqueSort = function( results ) {

+	var elem,

+		duplicates = [],

+		i = 1,

+		j = 0;

+

+	hasDuplicate = baseHasDuplicate;

+	results.sort( sortOrder );

+

+	if ( hasDuplicate ) {

+		for ( ; (elem = results[i]); i++ ) {

+			if ( elem === results[ i - 1 ] ) {

+				j = duplicates.push( i );

+			}

+		}

+		while ( j-- ) {

+			results.splice( duplicates[ j ], 1 );

+		}

+	}

+

+	return results;

+};

+

+Sizzle.error = function( msg ) {

+	throw new Error( "Syntax error, unrecognized expression: " + msg );

+};

+

+function tokenize( selector, parseOnly ) {

+	var matched, match, tokens, type,

+		soFar, groups, preFilters,

+		cached = tokenCache[ expando ][ selector + " " ];

+

+	if ( cached ) {

+		return parseOnly ? 0 : cached.slice( 0 );

+	}

+

+	soFar = selector;

+	groups = [];

+	preFilters = Expr.preFilter;

+

+	while ( soFar ) {

+

+		// Comma and first run

+		if ( !matched || (match = rcomma.exec( soFar )) ) {

+			if ( match ) {

+				// Don't consume trailing commas as valid

+				soFar = soFar.slice( match[0].length ) || soFar;

+			}

+			groups.push( tokens = [] );

+		}

+

+		matched = false;

+

+		// Combinators

+		if ( (match = rcombinators.exec( soFar )) ) {

+			tokens.push( matched = new Token( match.shift() ) );

+			soFar = soFar.slice( matched.length );

+

+			// Cast descendant combinators to space

+			matched.type = match[0].replace( rtrim, " " );

+		}

+

+		// Filters

+		for ( type in Expr.filter ) {

+			if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||

+				(match = preFilters[ type ]( match ))) ) {

+

+				tokens.push( matched = new Token( match.shift() ) );

+				soFar = soFar.slice( matched.length );

+				matched.type = type;

+				matched.matches = match;

+			}

+		}

+

+		if ( !matched ) {

+			break;

+		}

+	}

+

+	// Return the length of the invalid excess

+	// if we're just parsing

+	// Otherwise, throw an error or return tokens

+	return parseOnly ?

+		soFar.length :

+		soFar ?

+			Sizzle.error( selector ) :

+			// Cache the tokens

+			tokenCache( selector, groups ).slice( 0 );

+}

+

+function addCombinator( matcher, combinator, base ) {

+	var dir = combinator.dir,

+		checkNonElements = base && combinator.dir === "parentNode",

+		doneName = done++;

+

+	return combinator.first ?

+		// Check against closest ancestor/preceding element

+		function( elem, context, xml ) {

+			while ( (elem = elem[ dir ]) ) {

+				if ( checkNonElements || elem.nodeType === 1  ) {

+					return matcher( elem, context, xml );

+				}

+			}

+		} :

+

+		// Check against all ancestor/preceding elements

+		function( elem, context, xml ) {

+			// We can't set arbitrary data on XML nodes, so they don't benefit from dir caching

+			if ( !xml ) {

+				var cache,

+					dirkey = dirruns + " " + doneName + " ",

+					cachedkey = dirkey + cachedruns;

+				while ( (elem = elem[ dir ]) ) {

+					if ( checkNonElements || elem.nodeType === 1 ) {

+						if ( (cache = elem[ expando ]) === cachedkey ) {

+							return elem.sizset;

+						} else if ( typeof cache === "string" && cache.indexOf(dirkey) === 0 ) {

+							if ( elem.sizset ) {

+								return elem;

+							}

+						} else {

+							elem[ expando ] = cachedkey;

+							if ( matcher( elem, context, xml ) ) {

+								elem.sizset = true;

+								return elem;

+							}

+							elem.sizset = false;

+						}

+					}

+				}

+			} else {

+				while ( (elem = elem[ dir ]) ) {

+					if ( checkNonElements || elem.nodeType === 1 ) {

+						if ( matcher( elem, context, xml ) ) {

+							return elem;

+						}

+					}

+				}

+			}

+		};

+}

+

+function elementMatcher( matchers ) {

+	return matchers.length > 1 ?

+		function( elem, context, xml ) {

+			var i = matchers.length;

+			while ( i-- ) {

+				if ( !matchers[i]( elem, context, xml ) ) {

+					return false;

+				}

+			}

+			return true;

+		} :

+		matchers[0];

+}

+

+function condense( unmatched, map, filter, context, xml ) {

+	var elem,

+		newUnmatched = [],

+		i = 0,

+		len = unmatched.length,

+		mapped = map != null;

+

+	for ( ; i < len; i++ ) {

+		if ( (elem = unmatched[i]) ) {

+			if ( !filter || filter( elem, context, xml ) ) {

+				newUnmatched.push( elem );

+				if ( mapped ) {

+					map.push( i );

+				}

+			}

+		}

+	}

+

+	return newUnmatched;

+}

+

+function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {

+	if ( postFilter && !postFilter[ expando ] ) {

+		postFilter = setMatcher( postFilter );

+	}

+	if ( postFinder && !postFinder[ expando ] ) {

+		postFinder = setMatcher( postFinder, postSelector );

+	}

+	return markFunction(function( seed, results, context, xml ) {

+		var temp, i, elem,

+			preMap = [],

+			postMap = [],

+			preexisting = results.length,

+

+			// Get initial elements from seed or context

+			elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),

+

+			// Prefilter to get matcher input, preserving a map for seed-results synchronization

+			matcherIn = preFilter && ( seed || !selector ) ?

+				condense( elems, preMap, preFilter, context, xml ) :

+				elems,

+

+			matcherOut = matcher ?

+				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,

+				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?

+

+					// ...intermediate processing is necessary

+					[] :

+

+					// ...otherwise use results directly

+					results :

+				matcherIn;

+

+		// Find primary matches

+		if ( matcher ) {

+			matcher( matcherIn, matcherOut, context, xml );

+		}

+

+		// Apply postFilter

+		if ( postFilter ) {

+			temp = condense( matcherOut, postMap );

+			postFilter( temp, [], context, xml );

+

+			// Un-match failing elements by moving them back to matcherIn

+			i = temp.length;

+			while ( i-- ) {

+				if ( (elem = temp[i]) ) {

+					matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);

+				}

+			}

+		}

+

+		if ( seed ) {

+			if ( postFinder || preFilter ) {

+				if ( postFinder ) {

+					// Get the final matcherOut by condensing this intermediate into postFinder contexts

+					temp = [];

+					i = matcherOut.length;

+					while ( i-- ) {

+						if ( (elem = matcherOut[i]) ) {

+							// Restore matcherIn since elem is not yet a final match

+							temp.push( (matcherIn[i] = elem) );

+						}

+					}

+					postFinder( null, (matcherOut = []), temp, xml );

+				}

+

+				// Move matched elements from seed to results to keep them synchronized

+				i = matcherOut.length;

+				while ( i-- ) {

+					if ( (elem = matcherOut[i]) &&

+						(temp = postFinder ? indexOf.call( seed, elem ) : preMap[i]) > -1 ) {

+

+						seed[temp] = !(results[temp] = elem);

+					}

+				}

+			}

+

+		// Add elements to results, through postFinder if defined

+		} else {

+			matcherOut = condense(

+				matcherOut === results ?

+					matcherOut.splice( preexisting, matcherOut.length ) :

+					matcherOut

+			);

+			if ( postFinder ) {

+				postFinder( null, results, matcherOut, xml );

+			} else {

+				push.apply( results, matcherOut );

+			}

+		}

+	});

+}

+

+function matcherFromTokens( tokens ) {

+	var checkContext, matcher, j,

+		len = tokens.length,

+		leadingRelative = Expr.relative[ tokens[0].type ],

+		implicitRelative = leadingRelative || Expr.relative[" "],

+		i = leadingRelative ? 1 : 0,

+

+		// The foundational matcher ensures that elements are reachable from top-level context(s)

+		matchContext = addCombinator( function( elem ) {

+			return elem === checkContext;

+		}, implicitRelative, true ),

+		matchAnyContext = addCombinator( function( elem ) {

+			return indexOf.call( checkContext, elem ) > -1;

+		}, implicitRelative, true ),

+		matchers = [ function( elem, context, xml ) {

+			return ( !leadingRelative && ( xml || context !== outermostContext ) ) || (

+				(checkContext = context).nodeType ?

+					matchContext( elem, context, xml ) :

+					matchAnyContext( elem, context, xml ) );

+		} ];

+

+	for ( ; i < len; i++ ) {

+		if ( (matcher = Expr.relative[ tokens[i].type ]) ) {

+			matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ];

+		} else {

+			matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );

+

+			// Return special upon seeing a positional matcher

+			if ( matcher[ expando ] ) {

+				// Find the next relative operator (if any) for proper handling

+				j = ++i;

+				for ( ; j < len; j++ ) {

+					if ( Expr.relative[ tokens[j].type ] ) {

+						break;

+					}

+				}

+				return setMatcher(

+					i > 1 && elementMatcher( matchers ),

+					i > 1 && tokens.slice( 0, i - 1 ).join("").replace( rtrim, "$1" ),

+					matcher,

+					i < j && matcherFromTokens( tokens.slice( i, j ) ),

+					j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),

+					j < len && tokens.join("")

+				);

+			}

+			matchers.push( matcher );

+		}

+	}

+

+	return elementMatcher( matchers );

+}

+

+function matcherFromGroupMatchers( elementMatchers, setMatchers ) {

+	var bySet = setMatchers.length > 0,

+		byElement = elementMatchers.length > 0,

+		superMatcher = function( seed, context, xml, results, expandContext ) {

+			var elem, j, matcher,

+				setMatched = [],

+				matchedCount = 0,

+				i = "0",

+				unmatched = seed && [],

+				outermost = expandContext != null,

+				contextBackup = outermostContext,

+				// We must always have either seed elements or context

+				elems = seed || byElement && Expr.find["TAG"]( "*", expandContext && context.parentNode || context ),

+				// Nested matchers should use non-integer dirruns

+				dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.E);

+

+			if ( outermost ) {

+				outermostContext = context !== document && context;

+				cachedruns = superMatcher.el;

+			}

+

+			// Add elements passing elementMatchers directly to results

+			for ( ; (elem = elems[i]) != null; i++ ) {

+				if ( byElement && elem ) {

+					for ( j = 0; (matcher = elementMatchers[j]); j++ ) {

+						if ( matcher( elem, context, xml ) ) {

+							results.push( elem );

+							break;

+						}

+					}

+					if ( outermost ) {

+						dirruns = dirrunsUnique;

+						cachedruns = ++superMatcher.el;

+					}

+				}

+

+				// Track unmatched elements for set filters

+				if ( bySet ) {

+					// They will have gone through all possible matchers

+					if ( (elem = !matcher && elem) ) {

+						matchedCount--;

+					}

+

+					// Lengthen the array for every element, matched or not

+					if ( seed ) {

+						unmatched.push( elem );

+					}

+				}

+			}

+

+			// Apply set filters to unmatched elements

+			matchedCount += i;

+			if ( bySet && i !== matchedCount ) {

+				for ( j = 0; (matcher = setMatchers[j]); j++ ) {

+					matcher( unmatched, setMatched, context, xml );

+				}

+

+				if ( seed ) {

+					// Reintegrate element matches to eliminate the need for sorting

+					if ( matchedCount > 0 ) {

+						while ( i-- ) {

+							if ( !(unmatched[i] || setMatched[i]) ) {

+								setMatched[i] = pop.call( results );

+							}

+						}

+					}

+

+					// Discard index placeholder values to get only actual matches

+					setMatched = condense( setMatched );

+				}

+

+				// Add matches to results

+				push.apply( results, setMatched );

+

+				// Seedless set matches succeeding multiple successful matchers stipulate sorting

+				if ( outermost && !seed && setMatched.length > 0 &&

+					( matchedCount + setMatchers.length ) > 1 ) {

+

+					Sizzle.uniqueSort( results );

+				}

+			}

+

+			// Override manipulation of globals by nested matchers

+			if ( outermost ) {

+				dirruns = dirrunsUnique;

+				outermostContext = contextBackup;

+			}

+

+			return unmatched;

+		};

+

+	superMatcher.el = 0;

+	return bySet ?

+		markFunction( superMatcher ) :

+		superMatcher;

+}

+

+compile = Sizzle.compile = function( selector, group /* Internal Use Only */ ) {

+	var i,

+		setMatchers = [],

+		elementMatchers = [],

+		cached = compilerCache[ expando ][ selector + " " ];

+

+	if ( !cached ) {

+		// Generate a function of recursive functions that can be used to check each element

+		if ( !group ) {

+			group = tokenize( selector );

+		}

+		i = group.length;

+		while ( i-- ) {

+			cached = matcherFromTokens( group[i] );

+			if ( cached[ expando ] ) {

+				setMatchers.push( cached );

+			} else {

+				elementMatchers.push( cached );

+			}

+		}

+

+		// Cache the compiled function

+		cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );

+	}

+	return cached;

+};

+

+function multipleContexts( selector, contexts, results ) {

+	var i = 0,

+		len = contexts.length;

+	for ( ; i < len; i++ ) {

+		Sizzle( selector, contexts[i], results );

+	}

+	return results;

+}

+

+function select( selector, context, results, seed, xml ) {

+	var i, tokens, token, type, find,

+		match = tokenize( selector ),

+		j = match.length;

+

+	if ( !seed ) {

+		// Try to minimize operations if there is only one group

+		if ( match.length === 1 ) {

+

+			// Take a shortcut and set the context if the root selector is an ID

+			tokens = match[0] = match[0].slice( 0 );

+			if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&

+					context.nodeType === 9 && !xml &&

+					Expr.relative[ tokens[1].type ] ) {

+

+				context = Expr.find["ID"]( token.matches[0].replace( rbackslash, "" ), context, xml )[0];

+				if ( !context ) {

+					return results;

+				}

+

+				selector = selector.slice( tokens.shift().length );

+			}

+

+			// Fetch a seed set for right-to-left matching

+			for ( i = matchExpr["POS"].test( selector ) ? -1 : tokens.length - 1; i >= 0; i-- ) {

+				token = tokens[i];

+

+				// Abort if we hit a combinator

+				if ( Expr.relative[ (type = token.type) ] ) {

+					break;

+				}

+				if ( (find = Expr.find[ type ]) ) {

+					// Search, expanding context for leading sibling combinators

+					if ( (seed = find(

+						token.matches[0].replace( rbackslash, "" ),

+						rsibling.test( tokens[0].type ) && context.parentNode || context,

+						xml

+					)) ) {

+

+						// If seed is empty or no tokens remain, we can return early

+						tokens.splice( i, 1 );

+						selector = seed.length && tokens.join("");

+						if ( !selector ) {

+							push.apply( results, slice.call( seed, 0 ) );

+							return results;

+						}

+

+						break;

+					}

+				}

+			}

+		}

+	}

+

+	// Compile and execute a filtering function

+	// Provide `match` to avoid retokenization if we modified the selector above

+	compile( selector, match )(

+		seed,

+		context,

+		xml,

+		results,

+		rsibling.test( selector )

+	);

+	return results;

+}

+

+if ( document.querySelectorAll ) {

+	(function() {

+		var disconnectedMatch,

+			oldSelect = select,

+			rescape = /'|\\/g,

+			rattributeQuotes = /\=[\x20\t\r\n\f]*([^'"\]]*)[\x20\t\r\n\f]*\]/g,

+

+			// qSa(:focus) reports false when true (Chrome 21), no need to also add to buggyMatches since matches checks buggyQSA

+			// A support test would require too much code (would include document ready)

+			rbuggyQSA = [ ":focus" ],

+

+			// matchesSelector(:active) reports false when true (IE9/Opera 11.5)

+			// A support test would require too much code (would include document ready)

+			// just skip matchesSelector for :active

+			rbuggyMatches = [ ":active" ],

+			matches = docElem.matchesSelector ||

+				docElem.mozMatchesSelector ||

+				docElem.webkitMatchesSelector ||

+				docElem.oMatchesSelector ||

+				docElem.msMatchesSelector;

+

+		// Build QSA regex

+		// Regex strategy adopted from Diego Perini

+		assert(function( div ) {

+			// Select is set to empty string on purpose

+			// This is to test IE's treatment of not explictly

+			// setting a boolean content attribute,

+			// since its presence should be enough

+			// http://bugs.jquery.com/ticket/12359

+			div.innerHTML = "<select><option selected=''></option></select>";

+

+			// IE8 - Some boolean attributes are not treated correctly

+			if ( !div.querySelectorAll("[selected]").length ) {

+				rbuggyQSA.push( "\\[" + whitespace + "*(?:checked|disabled|ismap|multiple|readonly|selected|value)" );

+			}

+

+			// Webkit/Opera - :checked should return selected option elements

+			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked

+			// IE8 throws error here (do not put tests after this one)

+			if ( !div.querySelectorAll(":checked").length ) {

+				rbuggyQSA.push(":checked");

+			}

+		});

+

+		assert(function( div ) {

+

+			// Opera 10-12/IE9 - ^= $= *= and empty values

+			// Should not select anything

+			div.innerHTML = "<p test=''></p>";

+			if ( div.querySelectorAll("[test^='']").length ) {

+				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:\"\"|'')" );

+			}

+

+			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)

+			// IE8 throws error here (do not put tests after this one)

+			div.innerHTML = "<input type='hidden'/>";

+			if ( !div.querySelectorAll(":enabled").length ) {

+				rbuggyQSA.push(":enabled", ":disabled");

+			}

+		});

+

+		// rbuggyQSA always contains :focus, so no need for a length check

+		rbuggyQSA = /* rbuggyQSA.length && */ new RegExp( rbuggyQSA.join("|") );

+

+		select = function( selector, context, results, seed, xml ) {

+			// Only use querySelectorAll when not filtering,

+			// when this is not xml,

+			// and when no QSA bugs apply

+			if ( !seed && !xml && !rbuggyQSA.test( selector ) ) {

+				var groups, i,

+					old = true,

+					nid = expando,

+					newContext = context,

+					newSelector = context.nodeType === 9 && selector;

+

+				// qSA works strangely on Element-rooted queries

+				// We can work around this by specifying an extra ID on the root

+				// and working up from there (Thanks to Andrew Dupont for the technique)

+				// IE 8 doesn't work on object elements

+				if ( context.nodeType === 1 && context.nodeName.toLowerCase() !== "object" ) {

+					groups = tokenize( selector );

+

+					if ( (old = context.getAttribute("id")) ) {

+						nid = old.replace( rescape, "\\$&" );

+					} else {

+						context.setAttribute( "id", nid );

+					}

+					nid = "[id='" + nid + "'] ";

+

+					i = groups.length;

+					while ( i-- ) {

+						groups[i] = nid + groups[i].join("");

+					}

+					newContext = rsibling.test( selector ) && context.parentNode || context;

+					newSelector = groups.join(",");

+				}

+

+				if ( newSelector ) {

+					try {

+						push.apply( results, slice.call( newContext.querySelectorAll(

+							newSelector

+						), 0 ) );

+						return results;

+					} catch(qsaError) {

+					} finally {

+						if ( !old ) {

+							context.removeAttribute("id");

+						}

+					}

+				}

+			}

+

+			return oldSelect( selector, context, results, seed, xml );

+		};

+

+		if ( matches ) {

+			assert(function( div ) {

+				// Check to see if it's possible to do matchesSelector

+				// on a disconnected node (IE 9)

+				disconnectedMatch = matches.call( div, "div" );

+

+				// This should fail with an exception

+				// Gecko does not error, returns false instead

+				try {

+					matches.call( div, "[test!='']:sizzle" );

+					rbuggyMatches.push( "!=", pseudos );

+				} catch ( e ) {}

+			});

+

+			// rbuggyMatches always contains :active and :focus, so no need for a length check

+			rbuggyMatches = /* rbuggyMatches.length && */ new RegExp( rbuggyMatches.join("|") );

+

+			Sizzle.matchesSelector = function( elem, expr ) {

+				// Make sure that attribute selectors are quoted

+				expr = expr.replace( rattributeQuotes, "='$1']" );

+

+				// rbuggyMatches always contains :active, so no need for an existence check

+				if ( !isXML( elem ) && !rbuggyMatches.test( expr ) && !rbuggyQSA.test( expr ) ) {

+					try {

+						var ret = matches.call( elem, expr );

+

+						// IE 9's matchesSelector returns false on disconnected nodes

+						if ( ret || disconnectedMatch ||

+								// As well, disconnected nodes are said to be in a document

+								// fragment in IE 9

+								elem.document && elem.document.nodeType !== 11 ) {

+							return ret;

+						}

+					} catch(e) {}

+				}

+

+				return Sizzle( expr, null, null, [ elem ] ).length > 0;

+			};

+		}

+	})();

+}

+

+// Deprecated

+Expr.pseudos["nth"] = Expr.pseudos["eq"];

+

+// Back-compat

+function setFilters() {}

+Expr.filters = setFilters.prototype = Expr.pseudos;

+Expr.setFilters = new setFilters();

+

+// Override sizzle attribute retrieval
+Sizzle.attr = jQuery.attr;
+jQuery.find = Sizzle;
+jQuery.expr = Sizzle.selectors;
+jQuery.expr[":"] = jQuery.expr.pseudos;
+jQuery.unique = Sizzle.uniqueSort;
+jQuery.text = Sizzle.getText;
+jQuery.isXMLDoc = Sizzle.isXML;
+jQuery.contains = Sizzle.contains;
+

+

+})( window );

+var runtil = /Until$/,
+	rparentsprev = /^(?:parents|prev(?:Until|All))/,
+	isSimple = /^.[^:#\[\.,]*$/,
+	rneedsContext = jQuery.expr.match.needsContext,
+	// methods guaranteed to produce a unique set when starting from a unique set
+	guaranteedUnique = {
+		children: true,
+		contents: true,
+		next: true,
+		prev: true
+	};
+
+jQuery.fn.extend({
+	find: function( selector ) {
+		var i, l, length, n, r, ret,
+			self = this;
+
+		if ( typeof selector !== "string" ) {
+			return jQuery( selector ).filter(function() {
+				for ( i = 0, l = self.length; i < l; i++ ) {
+					if ( jQuery.contains( self[ i ], this ) ) {
+						return true;
+					}
+				}
+			});
+		}
+
+		ret = this.pushStack( "", "find", selector );
+
+		for ( i = 0, l = this.length; i < l; i++ ) {
+			length = ret.length;
+			jQuery.find( selector, this[i], ret );
+
+			if ( i > 0 ) {
+				// Make sure that the results are unique
+				for ( n = length; n < ret.length; n++ ) {
+					for ( r = 0; r < length; r++ ) {
+						if ( ret[r] === ret[n] ) {
+							ret.splice(n--, 1);
+							break;
+						}
+					}
+				}
+			}
+		}
+
+		return ret;
+	},
+
+	has: function( target ) {
+		var i,
+			targets = jQuery( target, this ),
+			len = targets.length;
+
+		return this.filter(function() {
+			for ( i = 0; i < len; i++ ) {
+				if ( jQuery.contains( this, targets[i] ) ) {
+					return true;
+				}
+			}
+		});
+	},
+
+	not: function( selector ) {
+		return this.pushStack( winnow(this, selector, false), "not", selector);
+	},
+
+	filter: function( selector ) {
+		return this.pushStack( winnow(this, selector, true), "filter", selector );
+	},
+
+	is: function( selector ) {
+		return !!selector && (
+			typeof selector === "string" ?
+				// If this is a positional/relative selector, check membership in the returned set
+				// so $("p:first").is("p:last") won't return true for a doc with two "p".
+				rneedsContext.test( selector ) ?
+					jQuery( selector, this.context ).index( this[0] ) >= 0 :
+					jQuery.filter( selector, this ).length > 0 :
+				this.filter( selector ).length > 0 );
+	},
+
+	closest: function( selectors, context ) {
+		var cur,
+			i = 0,
+			l = this.length,
+			ret = [],
+			pos = rneedsContext.test( selectors ) || typeof selectors !== "string" ?
+				jQuery( selectors, context || this.context ) :
+				0;
+
+		for ( ; i < l; i++ ) {
+			cur = this[i];
+
+			while ( cur && cur.ownerDocument && cur !== context && cur.nodeType !== 11 ) {
+				if ( pos ? pos.index(cur) > -1 : jQuery.find.matchesSelector(cur, selectors) ) {
+					ret.push( cur );
+					break;
+				}
+				cur = cur.parentNode;
+			}
+		}
+
+		ret = ret.length > 1 ? jQuery.unique( ret ) : ret;
+
+		return this.pushStack( ret, "closest", selectors );
+	},
+
+	// Determine the position of an element within
+	// the matched set of elements
+	index: function( elem ) {
+
+		// No argument, return index in parent
+		if ( !elem ) {
+			return ( this[0] && this[0].parentNode ) ? this.prevAll().length : -1;
+		}
+
+		// index in selector
+		if ( typeof elem === "string" ) {
+			return jQuery.inArray( this[0], jQuery( elem ) );
+		}
+
+		// Locate the position of the desired element
+		return jQuery.inArray(
+			// If it receives a jQuery object, the first element is used
+			elem.jquery ? elem[0] : elem, this );
+	},
+
+	add: function( selector, context ) {
+		var set = typeof selector === "string" ?
+				jQuery( selector, context ) :
+				jQuery.makeArray( selector && selector.nodeType ? [ selector ] : selector ),
+			all = jQuery.merge( this.get(), set );
+
+		return this.pushStack( isDisconnected( set[0] ) || isDisconnected( all[0] ) ?
+			all :
+			jQuery.unique( all ) );
+	},
+
+	addBack: function( selector ) {
+		return this.add( selector == null ?
+			this.prevObject : this.prevObject.filter(selector)
+		);
+	}
+});
+
+jQuery.fn.andSelf = jQuery.fn.addBack;
+
+// A painfully simple check to see if an element is disconnected
+// from a document (should be improved, where feasible).
+function isDisconnected( node ) {
+	return !node || !node.parentNode || node.parentNode.nodeType === 11;
+}
+
+function sibling( cur, dir ) {
+	do {
+		cur = cur[ dir ];
+	} while ( cur && cur.nodeType !== 1 );
+
+	return cur;
+}
+
+jQuery.each({
+	parent: function( elem ) {
+		var parent = elem.parentNode;
+		return parent && parent.nodeType !== 11 ? parent : null;
+	},
+	parents: function( elem ) {
+		return jQuery.dir( elem, "parentNode" );
+	},
+	parentsUntil: function( elem, i, until ) {
+		return jQuery.dir( elem, "parentNode", until );
+	},
+	next: function( elem ) {
+		return sibling( elem, "nextSibling" );
+	},
+	prev: function( elem ) {
+		return sibling( elem, "previousSibling" );
+	},
+	nextAll: function( elem ) {
+		return jQuery.dir( elem, "nextSibling" );
+	},
+	prevAll: function( elem ) {
+		return jQuery.dir( elem, "previousSibling" );
+	},
+	nextUntil: function( elem, i, until ) {
+		return jQuery.dir( elem, "nextSibling", until );
+	},
+	prevUntil: function( elem, i, until ) {
+		return jQuery.dir( elem, "previousSibling", until );
+	},
+	siblings: function( elem ) {
+		return jQuery.sibling( ( elem.parentNode || {} ).firstChild, elem );
+	},
+	children: function( elem ) {
+		return jQuery.sibling( elem.firstChild );
+	},
+	contents: function( elem ) {
+		return jQuery.nodeName( elem, "iframe" ) ?
+			elem.contentDocument || elem.contentWindow.document :
+			jQuery.merge( [], elem.childNodes );
+	}
+}, function( name, fn ) {
+	jQuery.fn[ name ] = function( until, selector ) {
+		var ret = jQuery.map( this, fn, until );
+
+		if ( !runtil.test( name ) ) {
+			selector = until;
+		}
+
+		if ( selector && typeof selector === "string" ) {
+			ret = jQuery.filter( selector, ret );
+		}
+
+		ret = this.length > 1 && !guaranteedUnique[ name ] ? jQuery.unique( ret ) : ret;
+
+		if ( this.length > 1 && rparentsprev.test( name ) ) {
+			ret = ret.reverse();
+		}
+
+		return this.pushStack( ret, name, core_slice.call( arguments ).join(",") );
+	};
+});
+
+jQuery.extend({
+	filter: function( expr, elems, not ) {
+		if ( not ) {
+			expr = ":not(" + expr + ")";
+		}
+
+		return elems.length === 1 ?
+			jQuery.find.matchesSelector(elems[0], expr) ? [ elems[0] ] : [] :
+			jQuery.find.matches(expr, elems);
+	},
+
+	dir: function( elem, dir, until ) {
+		var matched = [],
+			cur = elem[ dir ];
+
+		while ( cur && cur.nodeType !== 9 && (until === undefined || cur.nodeType !== 1 || !jQuery( cur ).is( until )) ) {
+			if ( cur.nodeType === 1 ) {
+				matched.push( cur );
+			}
+			cur = cur[dir];
+		}
+		return matched;
+	},
+
+	sibling: function( n, elem ) {
+		var r = [];
+
+		for ( ; n; n = n.nextSibling ) {
+			if ( n.nodeType === 1 && n !== elem ) {
+				r.push( n );
+			}
+		}
+
+		return r;
+	}
+});
+
+// Implement the identical functionality for filter and not
+function winnow( elements, qualifier, keep ) {
+
+	// Can't pass null or undefined to indexOf in Firefox 4
+	// Set to 0 to skip string check
+	qualifier = qualifier || 0;
+
+	if ( jQuery.isFunction( qualifier ) ) {
+		return jQuery.grep(elements, function( elem, i ) {
+			var retVal = !!qualifier.call( elem, i, elem );
+			return retVal === keep;
+		});
+
+	} else if ( qualifier.nodeType ) {
+		return jQuery.grep(elements, function( elem, i ) {
+			return ( elem === qualifier ) === keep;
+		});
+
+	} else if ( typeof qualifier === "string" ) {
+		var filtered = jQuery.grep(elements, function( elem ) {
+			return elem.nodeType === 1;
+		});
+
+		if ( isSimple.test( qualifier ) ) {
+			return jQuery.filter(qualifier, filtered, !keep);
+		} else {
+			qualifier = jQuery.filter( qualifier, filtered );
+		}
+	}
+
+	return jQuery.grep(elements, function( elem, i ) {
+		return ( jQuery.inArray( elem, qualifier ) >= 0 ) === keep;
+	});
+}
+function createSafeFragment( document ) {
+	var list = nodeNames.split( "|" ),
+	safeFrag = document.createDocumentFragment();
+
+	if ( safeFrag.createElement ) {
+		while ( list.length ) {
+			safeFrag.createElement(
+				list.pop()
+			);
+		}
+	}
+	return safeFrag;
+}
+
+var nodeNames = "abbr|article|aside|audio|bdi|canvas|data|datalist|details|figcaption|figure|footer|" +
+		"header|hgroup|mark|meter|nav|output|progress|section|summary|time|video",
+	rinlinejQuery = / jQuery\d+="(?:null|\d+)"/g,
+	rleadingWhitespace = /^\s+/,
+	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi,
+	rtagName = /<([\w:]+)/,
+	rtbody = /<tbody/i,
+	rhtml = /<|&#?\w+;/,
+	rnoInnerhtml = /<(?:script|style|link)/i,
+	rnocache = /<(?:script|object|embed|option|style)/i,
+	rnoshimcache = new RegExp("<(?:" + nodeNames + ")[\\s/>]", "i"),
+	rcheckableType = /^(?:checkbox|radio)$/,
+	// checked="checked" or checked
+	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
+	rscriptType = /\/(java|ecma)script/i,
+	rcleanScript = /^\s*<!(?:\[CDATA\[|\-\-)|[\]\-]{2}>\s*$/g,
+	wrapMap = {
+		option: [ 1, "<select multiple='multiple'>", "</select>" ],
+		legend: [ 1, "<fieldset>", "</fieldset>" ],
+		thead: [ 1, "<table>", "</table>" ],
+		tr: [ 2, "<table><tbody>", "</tbody></table>" ],
+		td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],
+		col: [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ],
+		area: [ 1, "<map>", "</map>" ],
+		_default: [ 0, "", "" ]
+	},
+	safeFragment = createSafeFragment( document ),
+	fragmentDiv = safeFragment.appendChild( document.createElement("div") );
+
+wrapMap.optgroup = wrapMap.option;
+wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
+wrapMap.th = wrapMap.td;
+
+// IE6-8 can't serialize link, script, style, or any html5 (NoScope) tags,
+// unless wrapped in a div with non-breaking characters in front of it.
+if ( !jQuery.support.htmlSerialize ) {
+	wrapMap._default = [ 1, "X<div>", "</div>" ];
+}
+
+jQuery.fn.extend({
+	text: function( value ) {
+		return jQuery.access( this, function( value ) {
+			return value === undefined ?
+				jQuery.text( this ) :
+				this.empty().append( ( this[0] && this[0].ownerDocument || document ).createTextNode( value ) );
+		}, null, value, arguments.length );
+	},
+
+	wrapAll: function( html ) {
+		if ( jQuery.isFunction( html ) ) {
+			return this.each(function(i) {
+				jQuery(this).wrapAll( html.call(this, i) );
+			});
+		}
+
+		if ( this[0] ) {
+			// The elements to wrap the target around
+			var wrap = jQuery( html, this[0].ownerDocument ).eq(0).clone(true);
+
+			if ( this[0].parentNode ) {
+				wrap.insertBefore( this[0] );
+			}
+
+			wrap.map(function() {
+				var elem = this;
+
+				while ( elem.firstChild && elem.firstChild.nodeType === 1 ) {
+					elem = elem.firstChild;
+				}
+
+				return elem;
+			}).append( this );
+		}
+
+		return this;
+	},
+
+	wrapInner: function( html ) {
+		if ( jQuery.isFunction( html ) ) {
+			return this.each(function(i) {
+				jQuery(this).wrapInner( html.call(this, i) );
+			});
+		}
+
+		return this.each(function() {
+			var self = jQuery( this ),
+				contents = self.contents();
+
+			if ( contents.length ) {
+				contents.wrapAll( html );
+
+			} else {
+				self.append( html );
+			}
+		});
+	},
+
+	wrap: function( html ) {
+		var isFunction = jQuery.isFunction( html );
+
+		return this.each(function(i) {
+			jQuery( this ).wrapAll( isFunction ? html.call(this, i) : html );
+		});
+	},
+
+	unwrap: function() {
+		return this.parent().each(function() {
+			if ( !jQuery.nodeName( this, "body" ) ) {
+				jQuery( this ).replaceWith( this.childNodes );
+			}
+		}).end();
+	},
+
+	append: function() {
+		return this.domManip(arguments, true, function( elem ) {
+			if ( this.nodeType === 1 || this.nodeType === 11 ) {
+				this.appendChild( elem );
+			}
+		});
+	},
+
+	prepend: function() {
+		return this.domManip(arguments, true, function( elem ) {
+			if ( this.nodeType === 1 || this.nodeType === 11 ) {
+				this.insertBefore( elem, this.firstChild );
+			}
+		});
+	},
+
+	before: function() {
+		if ( !isDisconnected( this[0] ) ) {
+			return this.domManip(arguments, false, function( elem ) {
+				this.parentNode.insertBefore( elem, this );
+			});
+		}
+
+		if ( arguments.length ) {
+			var set = jQuery.clean( arguments );
+			return this.pushStack( jQuery.merge( set, this ), "before", this.selector );
+		}
+	},
+
+	after: function() {
+		if ( !isDisconnected( this[0] ) ) {
+			return this.domManip(arguments, false, function( elem ) {
+				this.parentNode.insertBefore( elem, this.nextSibling );
+			});
+		}
+
+		if ( arguments.length ) {
+			var set = jQuery.clean( arguments );
+			return this.pushStack( jQuery.merge( this, set ), "after", this.selector );
+		}
+	},
+
+	// keepData is for internal use only--do not document
+	remove: function( selector, keepData ) {
+		var elem,
+			i = 0;
+
+		for ( ; (elem = this[i]) != null; i++ ) {
+			if ( !selector || jQuery.filter( selector, [ elem ] ).length ) {
+				if ( !keepData && elem.nodeType === 1 ) {
+					jQuery.cleanData( elem.getElementsByTagName("*") );
+					jQuery.cleanData( [ elem ] );
+				}
+
+				if ( elem.parentNode ) {
+					elem.parentNode.removeChild( elem );
+				}
+			}
+		}
+
+		return this;
+	},
+
+	empty: function() {
+		var elem,
+			i = 0;
+
+		for ( ; (elem = this[i]) != null; i++ ) {
+			// Remove element nodes and prevent memory leaks
+			if ( elem.nodeType === 1 ) {
+				jQuery.cleanData( elem.getElementsByTagName("*") );
+			}
+
+			// Remove any remaining nodes
+			while ( elem.firstChild ) {
+				elem.removeChild( elem.firstChild );
+			}
+		}
+
+		return this;
+	},
+
+	clone: function( dataAndEvents, deepDataAndEvents ) {
+		dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
+		deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;
+
+		return this.map( function () {
+			return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
+		});
+	},
+
+	html: function( value ) {
+		return jQuery.access( this, function( value ) {
+			var elem = this[0] || {},
+				i = 0,
+				l = this.length;
+
+			if ( value === undefined ) {
+				return elem.nodeType === 1 ?
+					elem.innerHTML.replace( rinlinejQuery, "" ) :
+					undefined;
+			}
+
+			// See if we can take a shortcut and just use innerHTML
+			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
+				( jQuery.support.htmlSerialize || !rnoshimcache.test( value )  ) &&
+				( jQuery.support.leadingWhitespace || !rleadingWhitespace.test( value ) ) &&
+				!wrapMap[ ( rtagName.exec( value ) || ["", ""] )[1].toLowerCase() ] ) {
+
+				value = value.replace( rxhtmlTag, "<$1></$2>" );
+
+				try {
+					for (; i < l; i++ ) {
+						// Remove element nodes and prevent memory leaks
+						elem = this[i] || {};
+						if ( elem.nodeType === 1 ) {
+							jQuery.cleanData( elem.getElementsByTagName( "*" ) );
+							elem.innerHTML = value;
+						}
+					}
+
+					elem = 0;
+
+				// If using innerHTML throws an exception, use the fallback method
+				} catch(e) {}
+			}
+
+			if ( elem ) {
+				this.empty().append( value );
+			}
+		}, null, value, arguments.length );
+	},
+
+	replaceWith: function( value ) {
+		if ( !isDisconnected( this[0] ) ) {
+			// Make sure that the elements are removed from the DOM before they are inserted
+			// this can help fix replacing a parent with child elements
+			if ( jQuery.isFunction( value ) ) {
+				return this.each(function(i) {
+					var self = jQuery(this), old = self.html();
+					self.replaceWith( value.call( this, i, old ) );
+				});
+			}
+
+			if ( typeof value !== "string" ) {
+				value = jQuery( value ).detach();
+			}
+
+			return this.each(function() {
+				var next = this.nextSibling,
+					parent = this.parentNode;
+
+				jQuery( this ).remove();
+
+				if ( next ) {
+					jQuery(next).before( value );
+				} else {
+					jQuery(parent).append( value );
+				}
+			});
+		}
+
+		return this.length ?
+			this.pushStack( jQuery(jQuery.isFunction(value) ? value() : value), "replaceWith", value ) :
+			this;
+	},
+
+	detach: function( selector ) {
+		return this.remove( selector, true );
+	},
+
+	domManip: function( args, table, callback ) {
+
+		// Flatten any nested arrays
+		args = [].concat.apply( [], args );
+
+		var results, first, fragment, iNoClone,
+			i = 0,
+			value = args[0],
+			scripts = [],
+			l = this.length;
+
+		// We can't cloneNode fragments that contain checked, in WebKit
+		if ( !jQuery.support.checkClone && l > 1 && typeof value === "string" && rchecked.test( value ) ) {
+			return this.each(function() {
+				jQuery(this).domManip( args, table, callback );
+			});
+		}
+
+		if ( jQuery.isFunction(value) ) {
+			return this.each(function(i) {
+				var self = jQuery(this);
+				args[0] = value.call( this, i, table ? self.html() : undefined );
+				self.domManip( args, table, callback );
+			});
+		}
+
+		if ( this[0] ) {
+			results = jQuery.buildFragment( args, this, scripts );
+			fragment = results.fragment;
+			first = fragment.firstChild;
+
+			if ( fragment.childNodes.length === 1 ) {
+				fragment = first;
+			}
+
+			if ( first ) {
+				table = table && jQuery.nodeName( first, "tr" );
+
+				// Use the original fragment for the last item instead of the first because it can end up
+				// being emptied incorrectly in certain situations (#8070).
+				// Fragments from the fragment cache must always be cloned and never used in place.
+				for ( iNoClone = results.cacheable || l - 1; i < l; i++ ) {
+					callback.call(
+						table && jQuery.nodeName( this[i], "table" ) ?
+							findOrAppend( this[i], "tbody" ) :
+							this[i],
+						i === iNoClone ?
+							fragment :
+							jQuery.clone( fragment, true, true )
+					);
+				}
+			}
+
+			// Fix #11809: Avoid leaking memory
+			fragment = first = null;
+
+			if ( scripts.length ) {
+				jQuery.each( scripts, function( i, elem ) {
+					if ( elem.src ) {
+						if ( jQuery.ajax ) {
+							jQuery.ajax({
+								url: elem.src,
+								type: "GET",
+								dataType: "script",
+								async: false,
+								global: false,
+								"throws": true
+							});
+						} else {
+							jQuery.error("no ajax");
+						}
+					} else {
+						jQuery.globalEval( ( elem.text || elem.textContent || elem.innerHTML || "" ).replace( rcleanScript, "" ) );
+					}
+
+					if ( elem.parentNode ) {
+						elem.parentNode.removeChild( elem );
+					}
+				});
+			}
+		}
+
+		return this;
+	}
+});
+
+function findOrAppend( elem, tag ) {
+	return elem.getElementsByTagName( tag )[0] || elem.appendChild( elem.ownerDocument.createElement( tag ) );
+}
+
+function cloneCopyEvent( src, dest ) {
+
+	if ( dest.nodeType !== 1 || !jQuery.hasData( src ) ) {
+		return;
+	}
+
+	var type, i, l,
+		oldData = jQuery._data( src ),
+		curData = jQuery._data( dest, oldData ),
+		events = oldData.events;
+
+	if ( events ) {
+		delete curData.handle;
+		curData.events = {};
+
+		for ( type in events ) {
+			for ( i = 0, l = events[ type ].length; i < l; i++ ) {
+				jQuery.event.add( dest, type, events[ type ][ i ] );
+			}
+		}
+	}
+
+	// make the cloned public data object a copy from the original
+	if ( curData.data ) {
+		curData.data = jQuery.extend( {}, curData.data );
+	}
+}
+
+function cloneFixAttributes( src, dest ) {
+	var nodeName;
+
+	// We do not need to do anything for non-Elements
+	if ( dest.nodeType !== 1 ) {
+		return;
+	}
+
+	// clearAttributes removes the attributes, which we don't want,
+	// but also removes the attachEvent events, which we *do* want
+	if ( dest.clearAttributes ) {
+		dest.clearAttributes();
+	}
+
+	// mergeAttributes, in contrast, only merges back on the
+	// original attributes, not the events
+	if ( dest.mergeAttributes ) {
+		dest.mergeAttributes( src );
+	}
+
+	nodeName = dest.nodeName.toLowerCase();
+
+	if ( nodeName === "object" ) {
+		// IE6-10 improperly clones children of object elements using classid.
+		// IE10 throws NoModificationAllowedError if parent is null, #12132.
+		if ( dest.parentNode ) {
+			dest.outerHTML = src.outerHTML;
+		}
+
+		// This path appears unavoidable for IE9. When cloning an object
+		// element in IE9, the outerHTML strategy above is not sufficient.
+		// If the src has innerHTML and the destination does not,
+		// copy the src.innerHTML into the dest.innerHTML. #10324
+		if ( jQuery.support.html5Clone && (src.innerHTML && !jQuery.trim(dest.innerHTML)) ) {
+			dest.innerHTML = src.innerHTML;
+		}
+
+	} else if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
+		// IE6-8 fails to persist the checked state of a cloned checkbox
+		// or radio button. Worse, IE6-7 fail to give the cloned element
+		// a checked appearance if the defaultChecked value isn't also set
+
+		dest.defaultChecked = dest.checked = src.checked;
+
+		// IE6-7 get confused and end up setting the value of a cloned
+		// checkbox/radio button to an empty string instead of "on"
+		if ( dest.value !== src.value ) {
+			dest.value = src.value;
+		}
+
+	// IE6-8 fails to return the selected option to the default selected
+	// state when cloning options
+	} else if ( nodeName === "option" ) {
+		dest.selected = src.defaultSelected;
+
+	// IE6-8 fails to set the defaultValue to the correct value when
+	// cloning other types of input fields
+	} else if ( nodeName === "input" || nodeName === "textarea" ) {
+		dest.defaultValue = src.defaultValue;
+
+	// IE blanks contents when cloning scripts
+	} else if ( nodeName === "script" && dest.text !== src.text ) {
+		dest.text = src.text;
+	}
+
+	// Event data gets referenced instead of copied if the expando
+	// gets copied too
+	dest.removeAttribute( jQuery.expando );
+}
+
+jQuery.buildFragment = function( args, context, scripts ) {
+	var fragment, cacheable, cachehit,
+		first = args[ 0 ];
+
+	// Set context from what may come in as undefined or a jQuery collection or a node
+	// Updated to fix #12266 where accessing context[0] could throw an exception in IE9/10 &
+	// also doubles as fix for #8950 where plain objects caused createDocumentFragment exception
+	context = context || document;
+	context = !context.nodeType && context[0] || context;
+	context = context.ownerDocument || context;
+
+	// Only cache "small" (1/2 KB) HTML strings that are associated with the main document
+	// Cloning options loses the selected state, so don't cache them
+	// IE 6 doesn't like it when you put <object> or <embed> elements in a fragment
+	// Also, WebKit does not clone 'checked' attributes on cloneNode, so don't cache
+	// Lastly, IE6,7,8 will not correctly reuse cached fragments that were created from unknown elems #10501
+	if ( args.length === 1 && typeof first === "string" && first.length < 512 && context === document &&
+		first.charAt(0) === "<" && !rnocache.test( first ) &&
+		(jQuery.support.checkClone || !rchecked.test( first )) &&
+		(jQuery.support.html5Clone || !rnoshimcache.test( first )) ) {
+
+		// Mark cacheable and look for a hit
+		cacheable = true;
+		fragment = jQuery.fragments[ first ];
+		cachehit = fragment !== undefined;
+	}
+
+	if ( !fragment ) {
+		fragment = context.createDocumentFragment();
+		jQuery.clean( args, context, fragment, scripts );
+
+		// Update the cache, but only store false
+		// unless this is a second parsing of the same content
+		if ( cacheable ) {
+			jQuery.fragments[ first ] = cachehit && fragment;
+		}
+	}
+
+	return { fragment: fragment, cacheable: cacheable };
+};
+
+jQuery.fragments = {};
+
+jQuery.each({
+	appendTo: "append",
+	prependTo: "prepend",
+	insertBefore: "before",
+	insertAfter: "after",
+	replaceAll: "replaceWith"
+}, function( name, original ) {
+	jQuery.fn[ name ] = function( selector ) {
+		var elems,
+			i = 0,
+			ret = [],
+			insert = jQuery( selector ),
+			l = insert.length,
+			parent = this.length === 1 && this[0].parentNode;
+
+		if ( (parent == null || parent && parent.nodeType === 11 && parent.childNodes.length === 1) && l === 1 ) {
+			insert[ original ]( this[0] );
+			return this;
+		} else {
+			for ( ; i < l; i++ ) {
+				elems = ( i > 0 ? this.clone(true) : this ).get();
+				jQuery( insert[i] )[ original ]( elems );
+				ret = ret.concat( elems );
+			}
+
+			return this.pushStack( ret, name, insert.selector );
+		}
+	};
+});
+
+function getAll( elem ) {
+	if ( typeof elem.getElementsByTagName !== "undefined" ) {
+		return elem.getElementsByTagName( "*" );
+
+	} else if ( typeof elem.querySelectorAll !== "undefined" ) {
+		return elem.querySelectorAll( "*" );
+
+	} else {
+		return [];
+	}
+}
+
+// Used in clean, fixes the defaultChecked property
+function fixDefaultChecked( elem ) {
+	if ( rcheckableType.test( elem.type ) ) {
+		elem.defaultChecked = elem.checked;
+	}
+}
+
+jQuery.extend({
+	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
+		var srcElements,
+			destElements,
+			i,
+			clone;
+
+		if ( jQuery.support.html5Clone || jQuery.isXMLDoc(elem) || !rnoshimcache.test( "<" + elem.nodeName + ">" ) ) {
+			clone = elem.cloneNode( true );
+
+		// IE<=8 does not properly clone detached, unknown element nodes
+		} else {
+			fragmentDiv.innerHTML = elem.outerHTML;
+			fragmentDiv.removeChild( clone = fragmentDiv.firstChild );
+		}
+
+		if ( (!jQuery.support.noCloneEvent || !jQuery.support.noCloneChecked) &&
+				(elem.nodeType === 1 || elem.nodeType === 11) && !jQuery.isXMLDoc(elem) ) {
+			// IE copies events bound via attachEvent when using cloneNode.
+			// Calling detachEvent on the clone will also remove the events
+			// from the original. In order to get around this, we use some
+			// proprietary methods to clear the events. Thanks to MooTools
+			// guys for this hotness.
+
+			cloneFixAttributes( elem, clone );
+
+			// Using Sizzle here is crazy slow, so we use getElementsByTagName instead
+			srcElements = getAll( elem );
+			destElements = getAll( clone );
+
+			// Weird iteration because IE will replace the length property
+			// with an element if you are cloning the body and one of the
+			// elements on the page has a name or id of "length"
+			for ( i = 0; srcElements[i]; ++i ) {
+				// Ensure that the destination node is not null; Fixes #9587
+				if ( destElements[i] ) {
+					cloneFixAttributes( srcElements[i], destElements[i] );
+				}
+			}
+		}
+
+		// Copy the events from the original to the clone
+		if ( dataAndEvents ) {
+			cloneCopyEvent( elem, clone );
+
+			if ( deepDataAndEvents ) {
+				srcElements = getAll( elem );
+				destElements = getAll( clone );
+
+				for ( i = 0; srcElements[i]; ++i ) {
+					cloneCopyEvent( srcElements[i], destElements[i] );
+				}
+			}
+		}
+
+		srcElements = destElements = null;
+
+		// Return the cloned set
+		return clone;
+	},
+
+	clean: function( elems, context, fragment, scripts ) {
+		var i, j, elem, tag, wrap, depth, div, hasBody, tbody, len, handleScript, jsTags,
+			safe = context === document && safeFragment,
+			ret = [];
+
+		// Ensure that context is a document
+		if ( !context || typeof context.createDocumentFragment === "undefined" ) {
+			context = document;
+		}
+
+		// Use the already-created safe fragment if context permits
+		for ( i = 0; (elem = elems[i]) != null; i++ ) {
+			if ( typeof elem === "number" ) {
+				elem += "";
+			}
+
+			if ( !elem ) {
+				continue;
+			}
+
+			// Convert html string into DOM nodes
+			if ( typeof elem === "string" ) {
+				if ( !rhtml.test( elem ) ) {
+					elem = context.createTextNode( elem );
+				} else {
+					// Ensure a safe container in which to render the html
+					safe = safe || createSafeFragment( context );
+					div = context.createElement("div");
+					safe.appendChild( div );
+
+					// Fix "XHTML"-style tags in all browsers
+					elem = elem.replace(rxhtmlTag, "<$1></$2>");
+
+					// Go to html and back, then peel off extra wrappers
+					tag = ( rtagName.exec( elem ) || ["", ""] )[1].toLowerCase();
+					wrap = wrapMap[ tag ] || wrapMap._default;
+					depth = wrap[0];
+					div.innerHTML = wrap[1] + elem + wrap[2];
+
+					// Move to the right depth
+					while ( depth-- ) {
+						div = div.lastChild;
+					}
+
+					// Remove IE's autoinserted <tbody> from table fragments
+					if ( !jQuery.support.tbody ) {
+
+						// String was a <table>, *may* have spurious <tbody>
+						hasBody = rtbody.test(elem);
+							tbody = tag === "table" && !hasBody ?
+								div.firstChild && div.firstChild.childNodes :
+
+								// String was a bare <thead> or <tfoot>
+								wrap[1] === "<table>" && !hasBody ?
+									div.childNodes :
+									[];
+
+						for ( j = tbody.length - 1; j >= 0 ; --j ) {
+							if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length ) {
+								tbody[ j ].parentNode.removeChild( tbody[ j ] );
+							}
+						}
+					}
+
+					// IE completely kills leading whitespace when innerHTML is used
+					if ( !jQuery.support.leadingWhitespace && rleadingWhitespace.test( elem ) ) {
+						div.insertBefore( context.createTextNode( rleadingWhitespace.exec(elem)[0] ), div.firstChild );
+					}
+
+					elem = div.childNodes;
+
+					// Take out of fragment container (we need a fresh div each time)
+					div.parentNode.removeChild( div );
+				}
+			}
+
+			if ( elem.nodeType ) {
+				ret.push( elem );
+			} else {
+				jQuery.merge( ret, elem );
+			}
+		}
+
+		// Fix #11356: Clear elements from safeFragment
+		if ( div ) {
+			elem = div = safe = null;
+		}
+
+		// Reset defaultChecked for any radios and checkboxes
+		// about to be appended to the DOM in IE 6/7 (#8060)
+		if ( !jQuery.support.appendChecked ) {
+			for ( i = 0; (elem = ret[i]) != null; i++ ) {
+				if ( jQuery.nodeName( elem, "input" ) ) {
+					fixDefaultChecked( elem );
+				} else if ( typeof elem.getElementsByTagName !== "undefined" ) {
+					jQuery.grep( elem.getElementsByTagName("input"), fixDefaultChecked );
+				}
+			}
+		}
+
+		// Append elements to a provided document fragment
+		if ( fragment ) {
+			// Special handling of each script element
+			handleScript = function( elem ) {
+				// Check if we consider it executable
+				if ( !elem.type || rscriptType.test( elem.type ) ) {
+					// Detach the script and store it in the scripts array (if provided) or the fragment
+					// Return truthy to indicate that it has been handled
+					return scripts ?
+						scripts.push( elem.parentNode ? elem.parentNode.removeChild( elem ) : elem ) :
+						fragment.appendChild( elem );
+				}
+			};
+
+			for ( i = 0; (elem = ret[i]) != null; i++ ) {
+				// Check if we're done after handling an executable script
+				if ( !( jQuery.nodeName( elem, "script" ) && handleScript( elem ) ) ) {
+					// Append to fragment and handle embedded scripts
+					fragment.appendChild( elem );
+					if ( typeof elem.getElementsByTagName !== "undefined" ) {
+						// handleScript alters the DOM, so use jQuery.merge to ensure snapshot iteration
+						jsTags = jQuery.grep( jQuery.merge( [], elem.getElementsByTagName("script") ), handleScript );
+
+						// Splice the scripts into ret after their former ancestor and advance our index beyond them
+						ret.splice.apply( ret, [i + 1, 0].concat( jsTags ) );
+						i += jsTags.length;
+					}
+				}
+			}
+		}
+
+		return ret;
+	},
+
+	cleanData: function( elems, /* internal */ acceptData ) {
+		var data, id, elem, type,
+			i = 0,
+			internalKey = jQuery.expando,
+			cache = jQuery.cache,
+			deleteExpando = jQuery.support.deleteExpando,
+			special = jQuery.event.special;
+
+		for ( ; (elem = elems[i]) != null; i++ ) {
+
+			if ( acceptData || jQuery.acceptData( elem ) ) {
+
+				id = elem[ internalKey ];
+				data = id && cache[ id ];
+
+				if ( data ) {
+					if ( data.events ) {
+						for ( type in data.events ) {
+							if ( special[ type ] ) {
+								jQuery.event.remove( elem, type );
+
+							// This is a shortcut to avoid jQuery.event.remove's overhead
+							} else {
+								jQuery.removeEvent( elem, type, data.handle );
+							}
+						}
+					}
+
+					// Remove cache only if it was not already removed by jQuery.event.remove
+					if ( cache[ id ] ) {
+
+						delete cache[ id ];
+
+						// IE does not allow us to delete expando properties from nodes,
+						// nor does it have a removeAttribute function on Document nodes;
+						// we must handle all of these cases
+						if ( deleteExpando ) {
+							delete elem[ internalKey ];
+
+						} else if ( elem.removeAttribute ) {
+							elem.removeAttribute( internalKey );
+
+						} else {
+							elem[ internalKey ] = null;
+						}
+
+						jQuery.deletedIds.push( id );
+					}
+				}
+			}
+		}
+	}
+});
+// Limit scope pollution from any deprecated API
+(function() {
+
+var matched, browser;
+
+// Use of jQuery.browser is frowned upon.
+// More details: http://api.jquery.com/jQuery.browser
+// jQuery.uaMatch maintained for back-compat
+jQuery.uaMatch = function( ua ) {
+	ua = ua.toLowerCase();
+
+	var match = /(chrome)[ \/]([\w.]+)/.exec( ua ) ||
+		/(webkit)[ \/]([\w.]+)/.exec( ua ) ||
+		/(opera)(?:.*version|)[ \/]([\w.]+)/.exec( ua ) ||
+		/(msie) ([\w.]+)/.exec( ua ) ||
+		ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( ua ) ||
+		[];
+
+	return {
+		browser: match[ 1 ] || "",
+		version: match[ 2 ] || "0"
+	};
+};
+
+matched = jQuery.uaMatch( navigator.userAgent );
+browser = {};
+
+if ( matched.browser ) {
+	browser[ matched.browser ] = true;
+	browser.version = matched.version;
+}
+
+// Chrome is Webkit, but Webkit is also Safari.
+if ( browser.chrome ) {
+	browser.webkit = true;
+} else if ( browser.webkit ) {
+	browser.safari = true;
+}
+
+jQuery.browser = browser;
+
+jQuery.sub = function() {
+	function jQuerySub( selector, context ) {
+		return new jQuerySub.fn.init( selector, context );
+	}
+	jQuery.extend( true, jQuerySub, this );
+	jQuerySub.superclass = this;
+	jQuerySub.fn = jQuerySub.prototype = this();
+	jQuerySub.fn.constructor = jQuerySub;
+	jQuerySub.sub = this.sub;
+	jQuerySub.fn.init = function init( selector, context ) {
+		if ( context && context instanceof jQuery && !(context instanceof jQuerySub) ) {
+			context = jQuerySub( context );
+		}
+
+		return jQuery.fn.init.call( this, selector, context, rootjQuerySub );
+	};
+	jQuerySub.fn.init.prototype = jQuerySub.fn;
+	var rootjQuerySub = jQuerySub(document);
+	return jQuerySub;
+};
+
+})();
+var curCSS, iframe, iframeDoc,
+	ralpha = /alpha\([^)]*\)/i,
+	ropacity = /opacity=([^)]*)/,
+	rposition = /^(top|right|bottom|left)$/,
+	// swappable if display is none or starts with table except "table", "table-cell", or "table-caption"
+	// see here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
+	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
+	rmargin = /^margin/,
+	rnumsplit = new RegExp( "^(" + core_pnum + ")(.*)$", "i" ),
+	rnumnonpx = new RegExp( "^(" + core_pnum + ")(?!px)[a-z%]+$", "i" ),
+	rrelNum = new RegExp( "^([-+])=(" + core_pnum + ")", "i" ),
+	elemdisplay = { BODY: "block" },
+
+	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
+	cssNormalTransform = {
+		letterSpacing: 0,
+		fontWeight: 400
+	},
+
+	cssExpand = [ "Top", "Right", "Bottom", "Left" ],
+	cssPrefixes = [ "Webkit", "O", "Moz", "ms" ],
+
+	eventsToggle = jQuery.fn.toggle;
+
+// return a css property mapped to a potentially vendor prefixed property
+function vendorPropName( style, name ) {
+
+	// shortcut for names that are not vendor prefixed
+	if ( name in style ) {
+		return name;
+	}
+
+	// check for vendor prefixed names
+	var capName = name.charAt(0).toUpperCase() + name.slice(1),
+		origName = name,
+		i = cssPrefixes.length;
+
+	while ( i-- ) {
+		name = cssPrefixes[ i ] + capName;
+		if ( name in style ) {
+			return name;
+		}
+	}
+
+	return origName;
+}
+
+function isHidden( elem, el ) {
+	elem = el || elem;
+	return jQuery.css( elem, "display" ) === "none" || !jQuery.contains( elem.ownerDocument, elem );
+}
+
+function showHide( elements, show ) {
+	var elem, display,
+		values = [],
+		index = 0,
+		length = elements.length;
+
+	for ( ; index < length; index++ ) {
+		elem = elements[ index ];
+		if ( !elem.style ) {
+			continue;
+		}
+		values[ index ] = jQuery._data( elem, "olddisplay" );
+		if ( show ) {
+			// Reset the inline display of this element to learn if it is
+			// being hidden by cascaded rules or not
+			if ( !values[ index ] && elem.style.display === "none" ) {
+				elem.style.display = "";
+			}
+
+			// Set elements which have been overridden with display: none
+			// in a stylesheet to whatever the default browser style is
+			// for such an element
+			if ( elem.style.display === "" && isHidden( elem ) ) {
+				values[ index ] = jQuery._data( elem, "olddisplay", css_defaultDisplay(elem.nodeName) );
+			}
+		} else {
+			display = curCSS( elem, "display" );
+
+			if ( !values[ index ] && display !== "none" ) {
+				jQuery._data( elem, "olddisplay", display );
+			}
+		}
+	}
+
+	// Set the display of most of the elements in a second loop
+	// to avoid the constant reflow
+	for ( index = 0; index < length; index++ ) {
+		elem = elements[ index ];
+		if ( !elem.style ) {
+			continue;
+		}
+		if ( !show || elem.style.display === "none" || elem.style.display === "" ) {
+			elem.style.display = show ? values[ index ] || "" : "none";
+		}
+	}
+
+	return elements;
+}
+
+jQuery.fn.extend({
+	css: function( name, value ) {
+		return jQuery.access( this, function( elem, name, value ) {
+			return value !== undefined ?
+				jQuery.style( elem, name, value ) :
+				jQuery.css( elem, name );
+		}, name, value, arguments.length > 1 );
+	},
+	show: function() {
+		return showHide( this, true );
+	},
+	hide: function() {
+		return showHide( this );
+	},
+	toggle: function( state, fn2 ) {
+		var bool = typeof state === "boolean";
+
+		if ( jQuery.isFunction( state ) && jQuery.isFunction( fn2 ) ) {
+			return eventsToggle.apply( this, arguments );
+		}
+
+		return this.each(function() {
+			if ( bool ? state : isHidden( this ) ) {
+				jQuery( this ).show();
+			} else {
+				jQuery( this ).hide();
+			}
+		});
+	}
+});
+
+jQuery.extend({
+	// Add in style property hooks for overriding the default
+	// behavior of getting and setting a style property
+	cssHooks: {
+		opacity: {
+			get: function( elem, computed ) {
+				if ( computed ) {
+					// We should always get a number back from opacity
+					var ret = curCSS( elem, "opacity" );
+					return ret === "" ? "1" : ret;
+
+				}
+			}
+		}
+	},
+
+	// Exclude the following css properties to add px
+	cssNumber: {
+		"fillOpacity": true,
+		"fontWeight": true,
+		"lineHeight": true,
+		"opacity": true,
+		"orphans": true,
+		"widows": true,
+		"zIndex": true,
+		"zoom": true
+	},
+
+	// Add in properties whose names you wish to fix before
+	// setting or getting the value
+	cssProps: {
+		// normalize float css property
+		"float": jQuery.support.cssFloat ? "cssFloat" : "styleFloat"
+	},
+
+	// Get and set the style property on a DOM Node
+	style: function( elem, name, value, extra ) {
+		// Don't set styles on text and comment nodes
+		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
+			return;
+		}
+
+		// Make sure that we're working with the right name
+		var ret, type, hooks,
+			origName = jQuery.camelCase( name ),
+			style = elem.style;
+
+		name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( style, origName ) );
+
+		// gets hook for the prefixed version
+		// followed by the unprefixed version
+		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
+
+		// Check if we're setting a value
+		if ( value !== undefined ) {
+			type = typeof value;
+
+			// convert relative number strings (+= or -=) to relative numbers. #7345
+			if ( type === "string" && (ret = rrelNum.exec( value )) ) {
+				value = ( ret[1] + 1 ) * ret[2] + parseFloat( jQuery.css( elem, name ) );
+				// Fixes bug #9237
+				type = "number";
+			}
+
+			// Make sure that NaN and null values aren't set. See: #7116
+			if ( value == null || type === "number" && isNaN( value ) ) {
+				return;
+			}
+
+			// If a number was passed in, add 'px' to the (except for certain CSS properties)
+			if ( type === "number" && !jQuery.cssNumber[ origName ] ) {
+				value += "px";
+			}
+
+			// If a hook was provided, use that value, otherwise just set the specified value
+			if ( !hooks || !("set" in hooks) || (value = hooks.set( elem, value, extra )) !== undefined ) {
+				// Wrapped to prevent IE from throwing errors when 'invalid' values are provided
+				// Fixes bug #5509
+				try {
+					style[ name ] = value;
+				} catch(e) {}
+			}
+
+		} else {
+			// If a hook was provided get the non-computed value from there
+			if ( hooks && "get" in hooks && (ret = hooks.get( elem, false, extra )) !== undefined ) {
+				return ret;
+			}
+
+			// Otherwise just get the value from the style object
+			return style[ name ];
+		}
+	},
+
+	css: function( elem, name, numeric, extra ) {
+		var val, num, hooks,
+			origName = jQuery.camelCase( name );
+
+		// Make sure that we're working with the right name
+		name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( elem.style, origName ) );
+
+		// gets hook for the prefixed version
+		// followed by the unprefixed version
+		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
+
+		// If a hook was provided get the computed value from there
+		if ( hooks && "get" in hooks ) {
+			val = hooks.get( elem, true, extra );
+		}
+
+		// Otherwise, if a way to get the computed value exists, use that
+		if ( val === undefined ) {
+			val = curCSS( elem, name );
+		}
+
+		//convert "normal" to computed value
+		if ( val === "normal" && name in cssNormalTransform ) {
+			val = cssNormalTransform[ name ];
+		}
+
+		// Return, converting to number if forced or a qualifier was provided and val looks numeric
+		if ( numeric || extra !== undefined ) {
+			num = parseFloat( val );
+			return numeric || jQuery.isNumeric( num ) ? num || 0 : val;
+		}
+		return val;
+	},
+
+	// A method for quickly swapping in/out CSS properties to get correct calculations
+	swap: function( elem, options, callback ) {
+		var ret, name,
+			old = {};
+
+		// Remember the old values, and insert the new ones
+		for ( name in options ) {
+			old[ name ] = elem.style[ name ];
+			elem.style[ name ] = options[ name ];
+		}
+
+		ret = callback.call( elem );
+
+		// Revert the old values
+		for ( name in options ) {
+			elem.style[ name ] = old[ name ];
+		}
+
+		return ret;
+	}
+});
+
+// NOTE: To any future maintainer, we've window.getComputedStyle
+// because jsdom on node.js will break without it.
+if ( window.getComputedStyle ) {
+	curCSS = function( elem, name ) {
+		var ret, width, minWidth, maxWidth,
+			computed = window.getComputedStyle( elem, null ),
+			style = elem.style;
+
+		if ( computed ) {
+
+			// getPropertyValue is only needed for .css('filter') in IE9, see #12537
+			ret = computed.getPropertyValue( name ) || computed[ name ];
+
+			if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
+				ret = jQuery.style( elem, name );
+			}
+
+			// A tribute to the "awesome hack by Dean Edwards"
+			// Chrome < 17 and Safari 5.0 uses "computed value" instead of "used value" for margin-right
+			// Safari 5.1.7 (at least) returns percentage for a larger set of values, but width seems to be reliably pixels
+			// this is against the CSSOM draft spec: http://dev.w3.org/csswg/cssom/#resolved-values
+			if ( rnumnonpx.test( ret ) && rmargin.test( name ) ) {
+				width = style.width;
+				minWidth = style.minWidth;
+				maxWidth = style.maxWidth;
+
+				style.minWidth = style.maxWidth = style.width = ret;
+				ret = computed.width;
+
+				style.width = width;
+				style.minWidth = minWidth;
+				style.maxWidth = maxWidth;
+			}
+		}
+
+		return ret;
+	};
+} else if ( document.documentElement.currentStyle ) {
+	curCSS = function( elem, name ) {
+		var left, rsLeft,
+			ret = elem.currentStyle && elem.currentStyle[ name ],
+			style = elem.style;
+
+		// Avoid setting ret to empty string here
+		// so we don't default to auto
+		if ( ret == null && style && style[ name ] ) {
+			ret = style[ name ];
+		}
+
+		// From the awesome hack by Dean Edwards
+		// http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
+
+		// If we're not dealing with a regular pixel number
+		// but a number that has a weird ending, we need to convert it to pixels
+		// but not position css attributes, as those are proportional to the parent element instead
+		// and we can't measure the parent instead because it might trigger a "stacking dolls" problem
+		if ( rnumnonpx.test( ret ) && !rposition.test( name ) ) {
+
+			// Remember the original values
+			left = style.left;
+			rsLeft = elem.runtimeStyle && elem.runtimeStyle.left;
+
+			// Put in the new values to get a computed value out
+			if ( rsLeft ) {
+				elem.runtimeStyle.left = elem.currentStyle.left;
+			}
+			style.left = name === "fontSize" ? "1em" : ret;
+			ret = style.pixelLeft + "px";
+
+			// Revert the changed values
+			style.left = left;
+			if ( rsLeft ) {
+				elem.runtimeStyle.left = rsLeft;
+			}
+		}
+
+		return ret === "" ? "auto" : ret;
+	};
+}
+
+function setPositiveNumber( elem, value, subtract ) {
+	var matches = rnumsplit.exec( value );
+	return matches ?
+			Math.max( 0, matches[ 1 ] - ( subtract || 0 ) ) + ( matches[ 2 ] || "px" ) :
+			value;
+}
+
+function augmentWidthOrHeight( elem, name, extra, isBorderBox ) {
+	var i = extra === ( isBorderBox ? "border" : "content" ) ?
+		// If we already have the right measurement, avoid augmentation
+		4 :
+		// Otherwise initialize for horizontal or vertical properties
+		name === "width" ? 1 : 0,
+
+		val = 0;
+
+	for ( ; i < 4; i += 2 ) {
+		// both box models exclude margin, so add it if we want it
+		if ( extra === "margin" ) {
+			// we use jQuery.css instead of curCSS here
+			// because of the reliableMarginRight CSS hook!
+			val += jQuery.css( elem, extra + cssExpand[ i ], true );
+		}
+
+		// From this point on we use curCSS for maximum performance (relevant in animations)
+		if ( isBorderBox ) {
+			// border-box includes padding, so remove it if we want content
+			if ( extra === "content" ) {
+				val -= parseFloat( curCSS( elem, "padding" + cssExpand[ i ] ) ) || 0;
+			}
+
+			// at this point, extra isn't border nor margin, so remove border
+			if ( extra !== "margin" ) {
+				val -= parseFloat( curCSS( elem, "border" + cssExpand[ i ] + "Width" ) ) || 0;
+			}
+		} else {
+			// at this point, extra isn't content, so add padding
+			val += parseFloat( curCSS( elem, "padding" + cssExpand[ i ] ) ) || 0;
+
+			// at this point, extra isn't content nor padding, so add border
+			if ( extra !== "padding" ) {
+				val += parseFloat( curCSS( elem, "border" + cssExpand[ i ] + "Width" ) ) || 0;
+			}
+		}
+	}
+
+	return val;
+}
+
+function getWidthOrHeight( elem, name, extra ) {
+
+	// Start with offset property, which is equivalent to the border-box value
+	var val = name === "width" ? elem.offsetWidth : elem.offsetHeight,
+		valueIsBorderBox = true,
+		isBorderBox = jQuery.support.boxSizing && jQuery.css( elem, "boxSizing" ) === "border-box";
+
+	// some non-html elements return undefined for offsetWidth, so check for null/undefined
+	// svg - https://bugzilla.mozilla.org/show_bug.cgi?id=649285
+	// MathML - https://bugzilla.mozilla.org/show_bug.cgi?id=491668
+	if ( val <= 0 || val == null ) {
+		// Fall back to computed then uncomputed css if necessary
+		val = curCSS( elem, name );
+		if ( val < 0 || val == null ) {
+			val = elem.style[ name ];
+		}
+
+		// Computed unit is not pixels. Stop here and return.
+		if ( rnumnonpx.test(val) ) {
+			return val;
+		}
+
+		// we need the check for style in case a browser which returns unreliable values
+		// for getComputedStyle silently falls back to the reliable elem.style
+		valueIsBorderBox = isBorderBox && ( jQuery.support.boxSizingReliable || val === elem.style[ name ] );
+
+		// Normalize "", auto, and prepare for extra
+		val = parseFloat( val ) || 0;
+	}
+
+	// use the active box-sizing model to add/subtract irrelevant styles
+	return ( val +
+		augmentWidthOrHeight(
+			elem,
+			name,
+			extra || ( isBorderBox ? "border" : "content" ),
+			valueIsBorderBox
+		)
+	) + "px";
+}
+
+
+// Try to determine the default display value of an element
+function css_defaultDisplay( nodeName ) {
+	if ( elemdisplay[ nodeName ] ) {
+		return elemdisplay[ nodeName ];
+	}
+
+	var elem = jQuery( "<" + nodeName + ">" ).appendTo( document.body ),
+		display = elem.css("display");
+	elem.remove();
+
+	// If the simple way fails,
+	// get element's real default display by attaching it to a temp iframe
+	if ( display === "none" || display === "" ) {
+		// Use the already-created iframe if possible
+		iframe = document.body.appendChild(
+			iframe || jQuery.extend( document.createElement("iframe"), {
+				frameBorder: 0,
+				width: 0,
+				height: 0
+			})
+		);
+
+		// Create a cacheable copy of the iframe document on first call.
+		// IE and Opera will allow us to reuse the iframeDoc without re-writing the fake HTML
+		// document to it; WebKit & Firefox won't allow reusing the iframe document.
+		if ( !iframeDoc || !iframe.createElement ) {
+			iframeDoc = ( iframe.contentWindow || iframe.contentDocument ).document;
+			iframeDoc.write("<!doctype html><html><body>");
+			iframeDoc.close();
+		}
+
+		elem = iframeDoc.body.appendChild( iframeDoc.createElement(nodeName) );
+
+		display = curCSS( elem, "display" );
+		document.body.removeChild( iframe );
+	}
+
+	// Store the correct default display
+	elemdisplay[ nodeName ] = display;
+
+	return display;
+}
+
+jQuery.each([ "height", "width" ], function( i, name ) {
+	jQuery.cssHooks[ name ] = {
+		get: function( elem, computed, extra ) {
+			if ( computed ) {
+				// certain elements can have dimension info if we invisibly show them
+				// however, it must have a current display style that would benefit from this
+				if ( elem.offsetWidth === 0 && rdisplayswap.test( curCSS( elem, "display" ) ) ) {
+					return jQuery.swap( elem, cssShow, function() {
+						return getWidthOrHeight( elem, name, extra );
+					});
+				} else {
+					return getWidthOrHeight( elem, name, extra );
+				}
+			}
+		},
+
+		set: function( elem, value, extra ) {
+			return setPositiveNumber( elem, value, extra ?
+				augmentWidthOrHeight(
+					elem,
+					name,
+					extra,
+					jQuery.support.boxSizing && jQuery.css( elem, "boxSizing" ) === "border-box"
+				) : 0
+			);
+		}
+	};
+});
+
+if ( !jQuery.support.opacity ) {
+	jQuery.cssHooks.opacity = {
+		get: function( elem, computed ) {
+			// IE uses filters for opacity
+			return ropacity.test( (computed && elem.currentStyle ? elem.currentStyle.filter : elem.style.filter) || "" ) ?
+				( 0.01 * parseFloat( RegExp.$1 ) ) + "" :
+				computed ? "1" : "";
+		},
+
+		set: function( elem, value ) {
+			var style = elem.style,
+				currentStyle = elem.currentStyle,
+				opacity = jQuery.isNumeric( value ) ? "alpha(opacity=" + value * 100 + ")" : "",
+				filter = currentStyle && currentStyle.filter || style.filter || "";
+
+			// IE has trouble with opacity if it does not have layout
+			// Force it by setting the zoom level
+			style.zoom = 1;
+
+			// if setting opacity to 1, and no other filters exist - attempt to remove filter attribute #6652
+			if ( value >= 1 && jQuery.trim( filter.replace( ralpha, "" ) ) === "" &&
+				style.removeAttribute ) {
+
+				// Setting style.filter to null, "" & " " still leave "filter:" in the cssText
+				// if "filter:" is present at all, clearType is disabled, we want to avoid this
+				// style.removeAttribute is IE Only, but so apparently is this code path...
+				style.removeAttribute( "filter" );
+
+				// if there there is no filter style applied in a css rule, we are done
+				if ( currentStyle && !currentStyle.filter ) {
+					return;
+				}
+			}
+
+			// otherwise, set new filter values
+			style.filter = ralpha.test( filter ) ?
+				filter.replace( ralpha, opacity ) :
+				filter + " " + opacity;
+		}
+	};
+}
+
+// These hooks cannot be added until DOM ready because the support test
+// for it is not run until after DOM ready
+jQuery(function() {
+	if ( !jQuery.support.reliableMarginRight ) {
+		jQuery.cssHooks.marginRight = {
+			get: function( elem, computed ) {
+				// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
+				// Work around by temporarily setting element display to inline-block
+				return jQuery.swap( elem, { "display": "inline-block" }, function() {
+					if ( computed ) {
+						return curCSS( elem, "marginRight" );
+					}
+				});
+			}
+		};
+	}
+
+	// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
+	// getComputedStyle returns percent when specified for top/left/bottom/right
+	// rather than make the css module depend on the offset module, we just check for it here
+	if ( !jQuery.support.pixelPosition && jQuery.fn.position ) {
+		jQuery.each( [ "top", "left" ], function( i, prop ) {
+			jQuery.cssHooks[ prop ] = {
+				get: function( elem, computed ) {
+					if ( computed ) {
+						var ret = curCSS( elem, prop );
+						// if curCSS returns percentage, fallback to offset
+						return rnumnonpx.test( ret ) ? jQuery( elem ).position()[ prop ] + "px" : ret;
+					}
+				}
+			};
+		});
+	}
+
+});
+
+if ( jQuery.expr && jQuery.expr.filters ) {
+	jQuery.expr.filters.hidden = function( elem ) {
+		return ( elem.offsetWidth === 0 && elem.offsetHeight === 0 ) || (!jQuery.support.reliableHiddenOffsets && ((elem.style && elem.style.display) || curCSS( elem, "display" )) === "none");
+	};
+
+	jQuery.expr.filters.visible = function( elem ) {
+		return !jQuery.expr.filters.hidden( elem );
+	};
+}
+
+// These hooks are used by animate to expand properties
+jQuery.each({
+	margin: "",
+	padding: "",
+	border: "Width"
+}, function( prefix, suffix ) {
+	jQuery.cssHooks[ prefix + suffix ] = {
+		expand: function( value ) {
+			var i,
+
+				// assumes a single number if not a string
+				parts = typeof value === "string" ? value.split(" ") : [ value ],
+				expanded = {};
+
+			for ( i = 0; i < 4; i++ ) {
+				expanded[ prefix + cssExpand[ i ] + suffix ] =
+					parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
+			}
+
+			return expanded;
+		}
+	};
+
+	if ( !rmargin.test( prefix ) ) {
+		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
+	}
+});
+var r20 = /%20/g,
+	rbracket = /\[\]$/,
+	rCRLF = /\r?\n/g,
+	rinput = /^(?:color|date|datetime|datetime-local|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i,
+	rselectTextarea = /^(?:select|textarea)/i;
+
+jQuery.fn.extend({
+	serialize: function() {
+		return jQuery.param( this.serializeArray() );
+	},
+	serializeArray: function() {
+		return this.map(function(){
+			return this.elements ? jQuery.makeArray( this.elements ) : this;
+		})
+		.filter(function(){
+			return this.name && !this.disabled &&
+				( this.checked || rselectTextarea.test( this.nodeName ) ||
+					rinput.test( this.type ) );
+		})
+		.map(function( i, elem ){
+			var val = jQuery( this ).val();
+
+			return val == null ?
+				null :
+				jQuery.isArray( val ) ?
+					jQuery.map( val, function( val, i ){
+						return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
+					}) :
+					{ name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
+		}).get();
+	}
+});
+
+//Serialize an array of form elements or a set of
+//key/values into a query string
+jQuery.param = function( a, traditional ) {
+	var prefix,
+		s = [],
+		add = function( key, value ) {
+			// If value is a function, invoke it and return its value
+			value = jQuery.isFunction( value ) ? value() : ( value == null ? "" : value );
+			s[ s.length ] = encodeURIComponent( key ) + "=" + encodeURIComponent( value );
+		};
+
+	// Set traditional to true for jQuery <= 1.3.2 behavior.
+	if ( traditional === undefined ) {
+		traditional = jQuery.ajaxSettings && jQuery.ajaxSettings.traditional;
+	}
+
+	// If an array was passed in, assume that it is an array of form elements.
+	if ( jQuery.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
+		// Serialize the form elements
+		jQuery.each( a, function() {
+			add( this.name, this.value );
+		});
+
+	} else {
+		// If traditional, encode the "old" way (the way 1.3.2 or older
+		// did it), otherwise encode params recursively.
+		for ( prefix in a ) {
+			buildParams( prefix, a[ prefix ], traditional, add );
+		}
+	}
+
+	// Return the resulting serialization
+	return s.join( "&" ).replace( r20, "+" );
+};
+
+function buildParams( prefix, obj, traditional, add ) {
+	var name;
+
+	if ( jQuery.isArray( obj ) ) {
+		// Serialize array item.
+		jQuery.each( obj, function( i, v ) {
+			if ( traditional || rbracket.test( prefix ) ) {
+				// Treat each array item as a scalar.
+				add( prefix, v );
+
+			} else {
+				// If array item is non-scalar (array or object), encode its
+				// numeric index to resolve deserialization ambiguity issues.
+				// Note that rack (as of 1.0.0) can't currently deserialize
+				// nested arrays properly, and attempting to do so may cause
+				// a server error. Possible fixes are to modify rack's
+				// deserialization algorithm or to provide an option or flag
+				// to force array serialization to be shallow.
+				buildParams( prefix + "[" + ( typeof v === "object" ? i : "" ) + "]", v, traditional, add );
+			}
+		});
+
+	} else if ( !traditional && jQuery.type( obj ) === "object" ) {
+		// Serialize object item.
+		for ( name in obj ) {
+			buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
+		}
+
+	} else {
+		// Serialize scalar item.
+		add( prefix, obj );
+	}
+}
+var
+	// Document location
+	ajaxLocParts,
+	ajaxLocation,
+
+	rhash = /#.*$/,
+	rheaders = /^(.*?):[ \t]*([^\r\n]*)\r?$/mg, // IE leaves an \r character at EOL
+	// #7653, #8125, #8152: local protocol detection
+	rlocalProtocol = /^(?:about|app|app\-storage|.+\-extension|file|res|widget):$/,
+	rnoContent = /^(?:GET|HEAD)$/,
+	rprotocol = /^\/\//,
+	rquery = /\?/,
+	rscript = /<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi,
+	rts = /([?&])_=[^&]*/,
+	rurl = /^([\w\+\.\-]+:)(?:\/\/([^\/?#:]*)(?::(\d+)|)|)/,
+
+	// Keep a copy of the old load method
+	_load = jQuery.fn.load,
+
+	/* Prefilters
+	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
+	 * 2) These are called:
+	 *    - BEFORE asking for a transport
+	 *    - AFTER param serialization (s.data is a string if s.processData is true)
+	 * 3) key is the dataType
+	 * 4) the catchall symbol "*" can be used
+	 * 5) execution will start with transport dataType and THEN continue down to "*" if needed
+	 */
+	prefilters = {},
+
+	/* Transports bindings
+	 * 1) key is the dataType
+	 * 2) the catchall symbol "*" can be used
+	 * 3) selection will start with transport dataType and THEN go to "*" if needed
+	 */
+	transports = {},
+
+	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
+	allTypes = ["*/"] + ["*"];
+
+// #8138, IE may throw an exception when accessing
+// a field from window.location if document.domain has been set
+try {
+	ajaxLocation = location.href;
+} catch( e ) {
+	// Use the href attribute of an A element
+	// since IE will modify it given document.location
+	ajaxLocation = document.createElement( "a" );
+	ajaxLocation.href = "";
+	ajaxLocation = ajaxLocation.href;
+}
+
+// Segment location into parts
+ajaxLocParts = rurl.exec( ajaxLocation.toLowerCase() ) || [];
+
+// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
+function addToPrefiltersOrTransports( structure ) {
+
+	// dataTypeExpression is optional and defaults to "*"
+	return function( dataTypeExpression, func ) {
+
+		if ( typeof dataTypeExpression !== "string" ) {
+			func = dataTypeExpression;
+			dataTypeExpression = "*";
+		}
+
+		var dataType, list, placeBefore,
+			dataTypes = dataTypeExpression.toLowerCase().split( core_rspace ),
+			i = 0,
+			length = dataTypes.length;
+
+		if ( jQuery.isFunction( func ) ) {
+			// For each dataType in the dataTypeExpression
+			for ( ; i < length; i++ ) {
+				dataType = dataTypes[ i ];
+				// We control if we're asked to add before
+				// any existing element
+				placeBefore = /^\+/.test( dataType );
+				if ( placeBefore ) {
+					dataType = dataType.substr( 1 ) || "*";
+				}
+				list = structure[ dataType ] = structure[ dataType ] || [];
+				// then we add to the structure accordingly
+				list[ placeBefore ? "unshift" : "push" ]( func );
+			}
+		}
+	};
+}
+
+// Base inspection function for prefilters and transports
+function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR,
+		dataType /* internal */, inspected /* internal */ ) {
+
+	dataType = dataType || options.dataTypes[ 0 ];
+	inspected = inspected || {};
+
+	inspected[ dataType ] = true;
+
+	var selection,
+		list = structure[ dataType ],
+		i = 0,
+		length = list ? list.length : 0,
+		executeOnly = ( structure === prefilters );
+
+	for ( ; i < length && ( executeOnly || !selection ); i++ ) {
+		selection = list[ i ]( options, originalOptions, jqXHR );
+		// If we got redirected to another dataType
+		// we try there if executing only and not done already
+		if ( typeof selection === "string" ) {
+			if ( !executeOnly || inspected[ selection ] ) {
+				selection = undefined;
+			} else {
+				options.dataTypes.unshift( selection );
+				selection = inspectPrefiltersOrTransports(
+						structure, options, originalOptions, jqXHR, selection, inspected );
+			}
+		}
+	}
+	// If we're only executing or nothing was selected
+	// we try the catchall dataType if not done already
+	if ( ( executeOnly || !selection ) && !inspected[ "*" ] ) {
+		selection = inspectPrefiltersOrTransports(
+				structure, options, originalOptions, jqXHR, "*", inspected );
+	}
+	// unnecessary when only executing (prefilters)
+	// but it'll be ignored by the caller in that case
+	return selection;
+}
+
+// A special extend for ajax options
+// that takes "flat" options (not to be deep extended)
+// Fixes #9887
+function ajaxExtend( target, src ) {
+	var key, deep,
+		flatOptions = jQuery.ajaxSettings.flatOptions || {};
+	for ( key in src ) {
+		if ( src[ key ] !== undefined ) {
+			( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];
+		}
+	}
+	if ( deep ) {
+		jQuery.extend( true, target, deep );
+	}
+}
+
+jQuery.fn.load = function( url, params, callback ) {
+	if ( typeof url !== "string" && _load ) {
+		return _load.apply( this, arguments );
+	}
+
+	// Don't do a request if no elements are being requested
+	if ( !this.length ) {
+		return this;
+	}
+
+	var selector, type, response,
+		self = this,
+		off = url.indexOf(" ");
+
+	if ( off >= 0 ) {
+		selector = url.slice( off, url.length );
+		url = url.slice( 0, off );
+	}
+
+	// If it's a function
+	if ( jQuery.isFunction( params ) ) {
+
+		// We assume that it's the callback
+		callback = params;
+		params = undefined;
+
+	// Otherwise, build a param string
+	} else if ( params && typeof params === "object" ) {
+		type = "POST";
+	}
+
+	// Request the remote document
+	jQuery.ajax({
+		url: url,
+
+		// if "type" variable is undefined, then "GET" method will be used
+		type: type,
+		dataType: "html",
+		data: params,
+		complete: function( jqXHR, status ) {
+			if ( callback ) {
+				self.each( callback, response || [ jqXHR.responseText, status, jqXHR ] );
+			}
+		}
+	}).done(function( responseText ) {
+
+		// Save response for use in complete callback
+		response = arguments;
+
+		// See if a selector was specified
+		self.html( selector ?
+
+			// Create a dummy div to hold the results
+			jQuery("<div>")
+
+				// inject the contents of the document in, removing the scripts
+				// to avoid any 'Permission Denied' errors in IE
+				.append( responseText.replace( rscript, "" ) )
+
+				// Locate the specified elements
+				.find( selector ) :
+
+			// If not, just inject the full result
+			responseText );
+
+	});
+
+	return this;
+};
+
+// Attach a bunch of functions for handling common AJAX events
+jQuery.each( "ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split( " " ), function( i, o ){
+	jQuery.fn[ o ] = function( f ){
+		return this.on( o, f );
+	};
+});
+
+jQuery.each( [ "get", "post" ], function( i, method ) {
+	jQuery[ method ] = function( url, data, callback, type ) {
+		// shift arguments if data argument was omitted
+		if ( jQuery.isFunction( data ) ) {
+			type = type || callback;
+			callback = data;
+			data = undefined;
+		}
+
+		return jQuery.ajax({
+			type: method,
+			url: url,
+			data: data,
+			success: callback,
+			dataType: type
+		});
+	};
+});
+
+jQuery.extend({
+
+	getScript: function( url, callback ) {
+		return jQuery.get( url, undefined, callback, "script" );
+	},
+
+	getJSON: function( url, data, callback ) {
+		return jQuery.get( url, data, callback, "json" );
+	},
+
+	// Creates a full fledged settings object into target
+	// with both ajaxSettings and settings fields.
+	// If target is omitted, writes into ajaxSettings.
+	ajaxSetup: function( target, settings ) {
+		if ( settings ) {
+			// Building a settings object
+			ajaxExtend( target, jQuery.ajaxSettings );
+		} else {
+			// Extending ajaxSettings
+			settings = target;
+			target = jQuery.ajaxSettings;
+		}
+		ajaxExtend( target, settings );
+		return target;
+	},
+
+	ajaxSettings: {
+		url: ajaxLocation,
+		isLocal: rlocalProtocol.test( ajaxLocParts[ 1 ] ),
+		global: true,
+		type: "GET",
+		contentType: "application/x-www-form-urlencoded; charset=UTF-8",
+		processData: true,
+		async: true,
+		/*
+		timeout: 0,
+		data: null,
+		dataType: null,
+		username: null,
+		password: null,
+		cache: null,
+		throws: false,
+		traditional: false,
+		headers: {},
+		*/
+
+		accepts: {
+			xml: "application/xml, text/xml",
+			html: "text/html",
+			text: "text/plain",
+			json: "application/json, text/javascript",
+			"*": allTypes
+		},
+
+		contents: {
+			xml: /xml/,
+			html: /html/,
+			json: /json/
+		},
+
+		responseFields: {
+			xml: "responseXML",
+			text: "responseText"
+		},
+
+		// List of data converters
+		// 1) key format is "source_type destination_type" (a single space in-between)
+		// 2) the catchall symbol "*" can be used for source_type
+		converters: {
+
+			// Convert anything to text
+			"* text": window.String,
+
+			// Text to html (true = no transformation)
+			"text html": true,
+
+			// Evaluate text as a json expression
+			"text json": jQuery.parseJSON,
+
+			// Parse text as xml
+			"text xml": jQuery.parseXML
+		},
+
+		// For options that shouldn't be deep extended:
+		// you can add your own custom options here if
+		// and when you create one that shouldn't be
+		// deep extended (see ajaxExtend)
+		flatOptions: {
+			context: true,
+			url: true
+		}
+	},
+
+	ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
+	ajaxTransport: addToPrefiltersOrTransports( transports ),
+
+	// Main method
+	ajax: function( url, options ) {
+
+		// If url is an object, simulate pre-1.5 signature
+		if ( typeof url === "object" ) {
+			options = url;
+			url = undefined;
+		}
+
+		// Force options to be an object
+		options = options || {};
+
+		var // ifModified key
+			ifModifiedKey,
+			// Response headers
+			responseHeadersString,
+			responseHeaders,
+			// transport
+			transport,
+			// timeout handle
+			timeoutTimer,
+			// Cross-domain detection vars
+			parts,
+			// To know if global events are to be dispatched
+			fireGlobals,
+			// Loop variable
+			i,
+			// Create the final options object
+			s = jQuery.ajaxSetup( {}, options ),
+			// Callbacks context
+			callbackContext = s.context || s,
+			// Context for global events
+			// It's the callbackContext if one was provided in the options
+			// and if it's a DOM node or a jQuery collection
+			globalEventContext = callbackContext !== s &&
+				( callbackContext.nodeType || callbackContext instanceof jQuery ) ?
+						jQuery( callbackContext ) : jQuery.event,
+			// Deferreds
+			deferred = jQuery.Deferred(),
+			completeDeferred = jQuery.Callbacks( "once memory" ),
+			// Status-dependent callbacks
+			statusCode = s.statusCode || {},
+			// Headers (they are sent all at once)
+			requestHeaders = {},
+			requestHeadersNames = {},
+			// The jqXHR state
+			state = 0,
+			// Default abort message
+			strAbort = "canceled",
+			// Fake xhr
+			jqXHR = {
+
+				readyState: 0,
+
+				// Caches the header
+				setRequestHeader: function( name, value ) {
+					if ( !state ) {
+						var lname = name.toLowerCase();
+						name = requestHeadersNames[ lname ] = requestHeadersNames[ lname ] || name;
+						requestHeaders[ name ] = value;
+					}
+					return this;
+				},
+
+				// Raw string
+				getAllResponseHeaders: function() {
+					return state === 2 ? responseHeadersString : null;
+				},
+
+				// Builds headers hashtable if needed
+				getResponseHeader: function( key ) {
+					var match;
+					if ( state === 2 ) {
+						if ( !responseHeaders ) {
+							responseHeaders = {};
+							while( ( match = rheaders.exec( responseHeadersString ) ) ) {
+								responseHeaders[ match[1].toLowerCase() ] = match[ 2 ];
+							}
+						}
+						match = responseHeaders[ key.toLowerCase() ];
+					}
+					return match === undefined ? null : match;
+				},
+
+				// Overrides response content-type header
+				overrideMimeType: function( type ) {
+					if ( !state ) {
+						s.mimeType = type;
+					}
+					return this;
+				},
+
+				// Cancel the request
+				abort: function( statusText ) {
+					statusText = statusText || strAbort;
+					if ( transport ) {
+						transport.abort( statusText );
+					}
+					done( 0, statusText );
+					return this;
+				}
+			};
+
+		// Callback for when everything is done
+		// It is defined here because jslint complains if it is declared
+		// at the end of the function (which would be more logical and readable)
+		function done( status, nativeStatusText, responses, headers ) {
+			var isSuccess, success, error, response, modified,
+				statusText = nativeStatusText;
+
+			// Called once
+			if ( state === 2 ) {
+				return;
+			}
+
+			// State is "done" now
+			state = 2;
+
+			// Clear timeout if it exists
+			if ( timeoutTimer ) {
+				clearTimeout( timeoutTimer );
+			}
+
+			// Dereference transport for early garbage collection
+			// (no matter how long the jqXHR object will be used)
+			transport = undefined;
+
+			// Cache response headers
+			responseHeadersString = headers || "";
+
+			// Set readyState
+			jqXHR.readyState = status > 0 ? 4 : 0;
+
+			// Get response data
+			if ( responses ) {
+				response = ajaxHandleResponses( s, jqXHR, responses );
+			}
+
+			// If successful, handle type chaining
+			if ( status >= 200 && status < 300 || status === 304 ) {
+
+				// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
+				if ( s.ifModified ) {
+
+					modified = jqXHR.getResponseHeader("Last-Modified");
+					if ( modified ) {
+						jQuery.lastModified[ ifModifiedKey ] = modified;
+					}
+					modified = jqXHR.getResponseHeader("Etag");
+					if ( modified ) {
+						jQuery.etag[ ifModifiedKey ] = modified;
+					}
+				}
+
+				// If not modified
+				if ( status === 304 ) {
+
+					statusText = "notmodified";
+					isSuccess = true;
+
+				// If we have data
+				} else {
+
+					isSuccess = ajaxConvert( s, response );
+					statusText = isSuccess.state;
+					success = isSuccess.data;
+					error = isSuccess.error;
+					isSuccess = !error;
+				}
+			} else {
+				// We extract error from statusText
+				// then normalize statusText and status for non-aborts
+				error = statusText;
+				if ( !statusText || status ) {
+					statusText = "error";
+					if ( status < 0 ) {
+						status = 0;
+					}
+				}
+			}
+
+			// Set data for the fake xhr object
+			jqXHR.status = status;
+			jqXHR.statusText = ( nativeStatusText || statusText ) + "";
+
+			// Success/Error
+			if ( isSuccess ) {
+				deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
+			} else {
+				deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
+			}
+
+			// Status-dependent callbacks
+			jqXHR.statusCode( statusCode );
+			statusCode = undefined;
+
+			if ( fireGlobals ) {
+				globalEventContext.trigger( "ajax" + ( isSuccess ? "Success" : "Error" ),
+						[ jqXHR, s, isSuccess ? success : error ] );
+			}
+
+			// Complete
+			completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );
+
+			if ( fireGlobals ) {
+				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );
+				// Handle the global AJAX counter
+				if ( !( --jQuery.active ) ) {
+					jQuery.event.trigger( "ajaxStop" );
+				}
+			}
+		}
+
+		// Attach deferreds
+		deferred.promise( jqXHR );
+		jqXHR.success = jqXHR.done;
+		jqXHR.error = jqXHR.fail;
+		jqXHR.complete = completeDeferred.add;
+
+		// Status-dependent callbacks
+		jqXHR.statusCode = function( map ) {
+			if ( map ) {
+				var tmp;
+				if ( state < 2 ) {
+					for ( tmp in map ) {
+						statusCode[ tmp ] = [ statusCode[tmp], map[tmp] ];
+					}
+				} else {
+					tmp = map[ jqXHR.status ];
+					jqXHR.always( tmp );
+				}
+			}
+			return this;
+		};
+
+		// Remove hash character (#7531: and string promotion)
+		// Add protocol if not provided (#5866: IE7 issue with protocol-less urls)
+		// We also use the url parameter if available
+		s.url = ( ( url || s.url ) + "" ).replace( rhash, "" ).replace( rprotocol, ajaxLocParts[ 1 ] + "//" );
+
+		// Extract dataTypes list
+		s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().split( core_rspace );
+
+		// A cross-domain request is in order when we have a protocol:host:port mismatch
+		if ( s.crossDomain == null ) {
+			parts = rurl.exec( s.url.toLowerCase() );
+			s.crossDomain = !!( parts &&
+				( parts[ 1 ] !== ajaxLocParts[ 1 ] || parts[ 2 ] !== ajaxLocParts[ 2 ] ||
+					( parts[ 3 ] || ( parts[ 1 ] === "http:" ? 80 : 443 ) ) !=
+						( ajaxLocParts[ 3 ] || ( ajaxLocParts[ 1 ] === "http:" ? 80 : 443 ) ) )
+			);
+		}
+
+		// Convert data if not already a string
+		if ( s.data && s.processData && typeof s.data !== "string" ) {
+			s.data = jQuery.param( s.data, s.traditional );
+		}
+
+		// Apply prefilters
+		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );
+
+		// If request was aborted inside a prefilter, stop there
+		if ( state === 2 ) {
+			return jqXHR;
+		}
+
+		// We can fire global events as of now if asked to
+		fireGlobals = s.global;
+
+		// Uppercase the type
+		s.type = s.type.toUpperCase();
+
+		// Determine if request has content
+		s.hasContent = !rnoContent.test( s.type );
+
+		// Watch for a new set of requests
+		if ( fireGlobals && jQuery.active++ === 0 ) {
+			jQuery.event.trigger( "ajaxStart" );
+		}
+
+		// More options handling for requests with no content
+		if ( !s.hasContent ) {
+
+			// If data is available, append data to url
+			if ( s.data ) {
+				s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.data;
+				// #9682: remove data so that it's not used in an eventual retry
+				delete s.data;
+			}
+
+			// Get ifModifiedKey before adding the anti-cache parameter
+			ifModifiedKey = s.url;
+
+			// Add anti-cache in url if needed
+			if ( s.cache === false ) {
+
+				var ts = jQuery.now(),
+					// try replacing _= if it is there
+					ret = s.url.replace( rts, "$1_=" + ts );
+
+				// if nothing was replaced, add timestamp to the end
+				s.url = ret + ( ( ret === s.url ) ? ( rquery.test( s.url ) ? "&" : "?" ) + "_=" + ts : "" );
+			}
+		}
+
+		// Set the correct header, if data is being sent
+		if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
+			jqXHR.setRequestHeader( "Content-Type", s.contentType );
+		}
+
+		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
+		if ( s.ifModified ) {
+			ifModifiedKey = ifModifiedKey || s.url;
+			if ( jQuery.lastModified[ ifModifiedKey ] ) {
+				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ ifModifiedKey ] );
+			}
+			if ( jQuery.etag[ ifModifiedKey ] ) {
+				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ ifModifiedKey ] );
+			}
+		}
+
+		// Set the Accepts header for the server, depending on the dataType
+		jqXHR.setRequestHeader(
+			"Accept",
+			s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[0] ] ?
+				s.accepts[ s.dataTypes[0] ] + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
+				s.accepts[ "*" ]
+		);
+
+		// Check for headers option
+		for ( i in s.headers ) {
+			jqXHR.setRequestHeader( i, s.headers[ i ] );
+		}
+
+		// Allow custom headers/mimetypes and early abort
+		if ( s.beforeSend && ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || state === 2 ) ) {
+				// Abort if not done already and return
+				return jqXHR.abort();
+
+		}
+
+		// aborting is no longer a cancellation
+		strAbort = "abort";
+
+		// Install callbacks on deferreds
+		for ( i in { success: 1, error: 1, complete: 1 } ) {
+			jqXHR[ i ]( s[ i ] );
+		}
+
+		// Get transport
+		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );
+
+		// If no transport, we auto-abort
+		if ( !transport ) {
+			done( -1, "No Transport" );
+		} else {
+			jqXHR.readyState = 1;
+			// Send global event
+			if ( fireGlobals ) {
+				globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
+			}
+			// Timeout
+			if ( s.async && s.timeout > 0 ) {
+				timeoutTimer = setTimeout( function(){
+					jqXHR.abort( "timeout" );
+				}, s.timeout );
+			}
+
+			try {
+				state = 1;
+				transport.send( requestHeaders, done );
+			} catch (e) {
+				// Propagate exception as error if not done
+				if ( state < 2 ) {
+					done( -1, e );
+				// Simply rethrow otherwise
+				} else {
+					throw e;
+				}
+			}
+		}
+
+		return jqXHR;
+	},
+
+	// Counter for holding the number of active queries
+	active: 0,
+
+	// Last-Modified header cache for next request
+	lastModified: {},
+	etag: {}
+
+});
+
+/* Handles responses to an ajax request:
+ * - sets all responseXXX fields accordingly
+ * - finds the right dataType (mediates between content-type and expected dataType)
+ * - returns the corresponding response
+ */
+function ajaxHandleResponses( s, jqXHR, responses ) {
+
+	var ct, type, finalDataType, firstDataType,
+		contents = s.contents,
+		dataTypes = s.dataTypes,
+		responseFields = s.responseFields;
+
+	// Fill responseXXX fields
+	for ( type in responseFields ) {
+		if ( type in responses ) {
+			jqXHR[ responseFields[type] ] = responses[ type ];
+		}
+	}
+
+	// Remove auto dataType and get content-type in the process
+	while( dataTypes[ 0 ] === "*" ) {
+		dataTypes.shift();
+		if ( ct === undefined ) {
+			ct = s.mimeType || jqXHR.getResponseHeader( "content-type" );
+		}
+	}
+
+	// Check if we're dealing with a known content-type
+	if ( ct ) {
+		for ( type in contents ) {
+			if ( contents[ type ] && contents[ type ].test( ct ) ) {
+				dataTypes.unshift( type );
+				break;
+			}
+		}
+	}
+
+	// Check to see if we have a response for the expected dataType
+	if ( dataTypes[ 0 ] in responses ) {
+		finalDataType = dataTypes[ 0 ];
+	} else {
+		// Try convertible dataTypes
+		for ( type in responses ) {
+			if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[0] ] ) {
+				finalDataType = type;
+				break;
+			}
+			if ( !firstDataType ) {
+				firstDataType = type;
+			}
+		}
+		// Or just use first one
+		finalDataType = finalDataType || firstDataType;
+	}
+
+	// If we found a dataType
+	// We add the dataType to the list if needed
+	// and return the corresponding response
+	if ( finalDataType ) {
+		if ( finalDataType !== dataTypes[ 0 ] ) {
+			dataTypes.unshift( finalDataType );
+		}
+		return responses[ finalDataType ];
+	}
+}
+
+// Chain conversions given the request and the original response
+function ajaxConvert( s, response ) {
+
+	var conv, conv2, current, tmp,
+		// Work with a copy of dataTypes in case we need to modify it for conversion
+		dataTypes = s.dataTypes.slice(),
+		prev = dataTypes[ 0 ],
+		converters = {},
+		i = 0;
+
+	// Apply the dataFilter if provided
+	if ( s.dataFilter ) {
+		response = s.dataFilter( response, s.dataType );
+	}
+
+	// Create converters map with lowercased keys
+	if ( dataTypes[ 1 ] ) {
+		for ( conv in s.converters ) {
+			converters[ conv.toLowerCase() ] = s.converters[ conv ];
+		}
+	}
+
+	// Convert to each sequential dataType, tolerating list modification
+	for ( ; (current = dataTypes[++i]); ) {
+
+		// There's only work to do if current dataType is non-auto
+		if ( current !== "*" ) {
+
+			// Convert response if prev dataType is non-auto and differs from current
+			if ( prev !== "*" && prev !== current ) {
+
+				// Seek a direct converter
+				conv = converters[ prev + " " + current ] || converters[ "* " + current ];
+
+				// If none found, seek a pair
+				if ( !conv ) {
+					for ( conv2 in converters ) {
+
+						// If conv2 outputs current
+						tmp = conv2.split(" ");
+						if ( tmp[ 1 ] === current ) {
+
+							// If prev can be converted to accepted input
+							conv = converters[ prev + " " + tmp[ 0 ] ] ||
+								converters[ "* " + tmp[ 0 ] ];
+							if ( conv ) {
+								// Condense equivalence converters
+								if ( conv === true ) {
+									conv = converters[ conv2 ];
+
+								// Otherwise, insert the intermediate dataType
+								} else if ( converters[ conv2 ] !== true ) {
+									current = tmp[ 0 ];
+									dataTypes.splice( i--, 0, current );
+								}
+
+								break;
+							}
+						}
+					}
+				}
+
+				// Apply converter (if not an equivalence)
+				if ( conv !== true ) {
+
+					// Unless errors are allowed to bubble, catch and return them
+					if ( conv && s["throws"] ) {
+						response = conv( response );
+					} else {
+						try {
+							response = conv( response );
+						} catch ( e ) {
+							return { state: "parsererror", error: conv ? e : "No conversion from " + prev + " to " + current };
+						}
+					}
+				}
+			}
+
+			// Update prev for next iteration
+			prev = current;
+		}
+	}
+
+	return { state: "success", data: response };
+}
+var oldCallbacks = [],
+	rquestion = /\?/,
+	rjsonp = /(=)\?(?=&|$)|\?\?/,
+	nonce = jQuery.now();
+
+// Default jsonp settings
+jQuery.ajaxSetup({
+	jsonp: "callback",
+	jsonpCallback: function() {
+		var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
+		this[ callback ] = true;
+		return callback;
+	}
+});
+
+// Detect, normalize options and install callbacks for jsonp requests
+jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
+
+	var callbackName, overwritten, responseContainer,
+		data = s.data,
+		url = s.url,
+		hasCallback = s.jsonp !== false,
+		replaceInUrl = hasCallback && rjsonp.test( url ),
+		replaceInData = hasCallback && !replaceInUrl && typeof data === "string" &&
+			!( s.contentType || "" ).indexOf("application/x-www-form-urlencoded") &&
+			rjsonp.test( data );
+
+	// Handle iff the expected data type is "jsonp" or we have a parameter to set
+	if ( s.dataTypes[ 0 ] === "jsonp" || replaceInUrl || replaceInData ) {
+
+		// Get callback name, remembering preexisting value associated with it
+		callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
+			s.jsonpCallback() :
+			s.jsonpCallback;
+		overwritten = window[ callbackName ];
+
+		// Insert callback into url or form data
+		if ( replaceInUrl ) {
+			s.url = url.replace( rjsonp, "$1" + callbackName );
+		} else if ( replaceInData ) {
+			s.data = data.replace( rjsonp, "$1" + callbackName );
+		} else if ( hasCallback ) {
+			s.url += ( rquestion.test( url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
+		}
+
+		// Use data converter to retrieve json after script execution
+		s.converters["script json"] = function() {
+			if ( !responseContainer ) {
+				jQuery.error( callbackName + " was not called" );
+			}
+			return responseContainer[ 0 ];
+		};
+
+		// force json dataType
+		s.dataTypes[ 0 ] = "json";
+
+		// Install callback
+		window[ callbackName ] = function() {
+			responseContainer = arguments;
+		};
+
+		// Clean-up function (fires after converters)
+		jqXHR.always(function() {
+			// Restore preexisting value
+			window[ callbackName ] = overwritten;
+
+			// Save back as free
+			if ( s[ callbackName ] ) {
+				// make sure that re-using the options doesn't screw things around
+				s.jsonpCallback = originalSettings.jsonpCallback;
+
+				// save the callback name for future use
+				oldCallbacks.push( callbackName );
+			}
+
+			// Call if it was a function and we have a response
+			if ( responseContainer && jQuery.isFunction( overwritten ) ) {
+				overwritten( responseContainer[ 0 ] );
+			}
+
+			responseContainer = overwritten = undefined;
+		});
+
+		// Delegate to script
+		return "script";
+	}
+});
+// Install script dataType
+jQuery.ajaxSetup({
+	accepts: {
+		script: "text/javascript, application/javascript, application/ecmascript, application/x-ecmascript"
+	},
+	contents: {
+		script: /javascript|ecmascript/
+	},
+	converters: {
+		"text script": function( text ) {
+			jQuery.globalEval( text );
+			return text;
+		}
+	}
+});
+
+// Handle cache's special case and global
+jQuery.ajaxPrefilter( "script", function( s ) {
+	if ( s.cache === undefined ) {
+		s.cache = false;
+	}
+	if ( s.crossDomain ) {
+		s.type = "GET";
+		s.global = false;
+	}
+});
+
+// Bind script tag hack transport
+jQuery.ajaxTransport( "script", function(s) {
+
+	// This transport only deals with cross domain requests
+	if ( s.crossDomain ) {
+
+		var script,
+			head = document.head || document.getElementsByTagName( "head" )[0] || document.documentElement;
+
+		return {
+
+			send: function( _, callback ) {
+
+				script = document.createElement( "script" );
+
+				script.async = "async";
+
+				if ( s.scriptCharset ) {
+					script.charset = s.scriptCharset;
+				}
+
+				script.src = s.url;
+
+				// Attach handlers for all browsers
+				script.onload = script.onreadystatechange = function( _, isAbort ) {
+
+					if ( isAbort || !script.readyState || /loaded|complete/.test( script.readyState ) ) {
+
+						// Handle memory leak in IE
+						script.onload = script.onreadystatechange = null;
+
+						// Remove the script
+						if ( head && script.parentNode ) {
+							head.removeChild( script );
+						}
+
+						// Dereference the script
+						script = undefined;
+
+						// Callback if not abort
+						if ( !isAbort ) {
+							callback( 200, "success" );
+						}
+					}
+				};
+				// Use insertBefore instead of appendChild  to circumvent an IE6 bug.
+				// This arises when a base node is used (#2709 and #4378).
+				head.insertBefore( script, head.firstChild );
+			},
+
+			abort: function() {
+				if ( script ) {
+					script.onload( 0, 1 );
+				}
+			}
+		};
+	}
+});
+var xhrCallbacks,
+	// #5280: Internet Explorer will keep connections alive if we don't abort on unload
+	xhrOnUnloadAbort = window.ActiveXObject ? function() {
+		// Abort all pending requests
+		for ( var key in xhrCallbacks ) {
+			xhrCallbacks[ key ]( 0, 1 );
+		}
+	} : false,
+	xhrId = 0;
+
+// Functions to create xhrs
+function createStandardXHR() {
+	try {
+		return new window.XMLHttpRequest();
+	} catch( e ) {}
+}
+
+function createActiveXHR() {
+	try {
+		return new window.ActiveXObject( "Microsoft.XMLHTTP" );
+	} catch( e ) {}
+}
+
+// Create the request object
+// (This is still attached to ajaxSettings for backward compatibility)
+jQuery.ajaxSettings.xhr = window.ActiveXObject ?
+	/* Microsoft failed to properly
+	 * implement the XMLHttpRequest in IE7 (can't request local files),
+	 * so we use the ActiveXObject when it is available
+	 * Additionally XMLHttpRequest can be disabled in IE7/IE8 so
+	 * we need a fallback.
+	 */
+	function() {
+		return !this.isLocal && createStandardXHR() || createActiveXHR();
+	} :
+	// For all other browsers, use the standard XMLHttpRequest object
+	createStandardXHR;
+
+// Determine support properties
+(function( xhr ) {
+	jQuery.extend( jQuery.support, {
+		ajax: !!xhr,
+		cors: !!xhr && ( "withCredentials" in xhr )
+	});
+})( jQuery.ajaxSettings.xhr() );
+
+// Create transport if the browser can provide an xhr
+if ( jQuery.support.ajax ) {
+
+	jQuery.ajaxTransport(function( s ) {
+		// Cross domain only allowed if supported through XMLHttpRequest
+		if ( !s.crossDomain || jQuery.support.cors ) {
+
+			var callback;
+
+			return {
+				send: function( headers, complete ) {
+
+					// Get a new xhr
+					var handle, i,
+						xhr = s.xhr();
+
+					// Open the socket
+					// Passing null username, generates a login popup on Opera (#2865)
+					if ( s.username ) {
+						xhr.open( s.type, s.url, s.async, s.username, s.password );
+					} else {
+						xhr.open( s.type, s.url, s.async );
+					}
+
+					// Apply custom fields if provided
+					if ( s.xhrFields ) {
+						for ( i in s.xhrFields ) {
+							xhr[ i ] = s.xhrFields[ i ];
+						}
+					}
+
+					// Override mime type if needed
+					if ( s.mimeType && xhr.overrideMimeType ) {
+						xhr.overrideMimeType( s.mimeType );
+					}
+
+					// X-Requested-With header
+					// For cross-domain requests, seeing as conditions for a preflight are
+					// akin to a jigsaw puzzle, we simply never set it to be sure.
+					// (it can always be set on a per-request basis or even using ajaxSetup)
+					// For same-domain requests, won't change header if already provided.
+					if ( !s.crossDomain && !headers["X-Requested-With"] ) {
+						headers[ "X-Requested-With" ] = "XMLHttpRequest";
+					}
+
+					// Need an extra try/catch for cross domain requests in Firefox 3
+					try {
+						for ( i in headers ) {
+							xhr.setRequestHeader( i, headers[ i ] );
+						}
+					} catch( _ ) {}
+
+					// Do send the request
+					// This may raise an exception which is actually
+					// handled in jQuery.ajax (so no try/catch here)
+					xhr.send( ( s.hasContent && s.data ) || null );
+
+					// Listener
+					callback = function( _, isAbort ) {
+
+						var status,
+							statusText,
+							responseHeaders,
+							responses,
+							xml;
+
+						// Firefox throws exceptions when accessing properties
+						// of an xhr when a network error occurred
+						// http://helpful.knobs-dials.com/index.php/Component_returned_failure_code:_0x80040111_(NS_ERROR_NOT_AVAILABLE)
+						try {
+
+							// Was never called and is aborted or complete
+							if ( callback && ( isAbort || xhr.readyState === 4 ) ) {
+
+								// Only called once
+								callback = undefined;
+
+								// Do not keep as active anymore
+								if ( handle ) {
+									xhr.onreadystatechange = jQuery.noop;
+									if ( xhrOnUnloadAbort ) {
+										delete xhrCallbacks[ handle ];
+									}
+								}
+
+								// If it's an abort
+								if ( isAbort ) {
+									// Abort it manually if needed
+									if ( xhr.readyState !== 4 ) {
+										xhr.abort();
+									}
+								} else {
+									status = xhr.status;
+									responseHeaders = xhr.getAllResponseHeaders();
+									responses = {};
+									xml = xhr.responseXML;
+
+									// Construct response list
+									if ( xml && xml.documentElement /* #4958 */ ) {
+										responses.xml = xml;
+									}
+
+									// When requesting binary data, IE6-9 will throw an exception
+									// on any attempt to access responseText (#11426)
+									try {
+										responses.text = xhr.responseText;
+									} catch( e ) {
+									}
+
+									// Firefox throws an exception when accessing
+									// statusText for faulty cross-domain requests
+									try {
+										statusText = xhr.statusText;
+									} catch( e ) {
+										// We normalize with Webkit giving an empty statusText
+										statusText = "";
+									}
+
+									// Filter status for non standard behaviors
+
+									// If the request is local and we have data: assume a success
+									// (success with no data won't get notified, that's the best we
+									// can do given current implementations)
+									if ( !status && s.isLocal && !s.crossDomain ) {
+										status = responses.text ? 200 : 404;
+									// IE - #1450: sometimes returns 1223 when it should be 204
+									} else if ( status === 1223 ) {
+										status = 204;
+									}
+								}
+							}
+						} catch( firefoxAccessException ) {
+							if ( !isAbort ) {
+								complete( -1, firefoxAccessException );
+							}
+						}
+
+						// Call complete if needed
+						if ( responses ) {
+							complete( status, statusText, responses, responseHeaders );
+						}
+					};
+
+					if ( !s.async ) {
+						// if we're in sync mode we fire the callback
+						callback();
+					} else if ( xhr.readyState === 4 ) {
+						// (IE6 & IE7) if it's in cache and has been
+						// retrieved directly we need to fire the callback
+						setTimeout( callback, 0 );
+					} else {
+						handle = ++xhrId;
+						if ( xhrOnUnloadAbort ) {
+							// Create the active xhrs callbacks list if needed
+							// and attach the unload handler
+							if ( !xhrCallbacks ) {
+								xhrCallbacks = {};
+								jQuery( window ).unload( xhrOnUnloadAbort );
+							}
+							// Add to list of active xhrs callbacks
+							xhrCallbacks[ handle ] = callback;
+						}
+						xhr.onreadystatechange = callback;
+					}
+				},
+
+				abort: function() {
+					if ( callback ) {
+						callback(0,1);
+					}
+				}
+			};
+		}
+	});
+}
+var fxNow, timerId,
+	rfxtypes = /^(?:toggle|show|hide)$/,
+	rfxnum = new RegExp( "^(?:([-+])=|)(" + core_pnum + ")([a-z%]*)$", "i" ),
+	rrun = /queueHooks$/,
+	animationPrefilters = [ defaultPrefilter ],
+	tweeners = {
+		"*": [function( prop, value ) {
+			var end, unit,
+				tween = this.createTween( prop, value ),
+				parts = rfxnum.exec( value ),
+				target = tween.cur(),
+				start = +target || 0,
+				scale = 1,
+				maxIterations = 20;
+
+			if ( parts ) {
+				end = +parts[2];
+				unit = parts[3] || ( jQuery.cssNumber[ prop ] ? "" : "px" );
+
+				// We need to compute starting value
+				if ( unit !== "px" && start ) {
+					// Iteratively approximate from a nonzero starting point
+					// Prefer the current property, because this process will be trivial if it uses the same units
+					// Fallback to end or a simple constant
+					start = jQuery.css( tween.elem, prop, true ) || end || 1;
+
+					do {
+						// If previous iteration zeroed out, double until we get *something*
+						// Use a string for doubling factor so we don't accidentally see scale as unchanged below
+						scale = scale || ".5";
+
+						// Adjust and apply
+						start = start / scale;
+						jQuery.style( tween.elem, prop, start + unit );
+
+					// Update scale, tolerating zero or NaN from tween.cur()
+					// And breaking the loop if scale is unchanged or perfect, or if we've just had enough
+					} while ( scale !== (scale = tween.cur() / target) && scale !== 1 && --maxIterations );
+				}
+
+				tween.unit = unit;
+				tween.start = start;
+				// If a +=/-= token was provided, we're doing a relative animation
+				tween.end = parts[1] ? start + ( parts[1] + 1 ) * end : end;
+			}
+			return tween;
+		}]
+	};
+
+// Animations created synchronously will run synchronously
+function createFxNow() {
+	setTimeout(function() {
+		fxNow = undefined;
+	}, 0 );
+	return ( fxNow = jQuery.now() );
+}
+
+function createTweens( animation, props ) {
+	jQuery.each( props, function( prop, value ) {
+		var collection = ( tweeners[ prop ] || [] ).concat( tweeners[ "*" ] ),
+			index = 0,
+			length = collection.length;
+		for ( ; index < length; index++ ) {
+			if ( collection[ index ].call( animation, prop, value ) ) {
+
+				// we're done with this property
+				return;
+			}
+		}
+	});
+}
+
+function Animation( elem, properties, options ) {
+	var result,
+		index = 0,
+		tweenerIndex = 0,
+		length = animationPrefilters.length,
+		deferred = jQuery.Deferred().always( function() {
+			// don't match elem in the :animated selector
+			delete tick.elem;
+		}),
+		tick = function() {
+			var currentTime = fxNow || createFxNow(),
+				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),
+				// archaic crash bug won't allow us to use 1 - ( 0.5 || 0 ) (#12497)
+				temp = remaining / animation.duration || 0,
+				percent = 1 - temp,
+				index = 0,
+				length = animation.tweens.length;
+
+			for ( ; index < length ; index++ ) {
+				animation.tweens[ index ].run( percent );
+			}
+
+			deferred.notifyWith( elem, [ animation, percent, remaining ]);
+
+			if ( percent < 1 && length ) {
+				return remaining;
+			} else {
+				deferred.resolveWith( elem, [ animation ] );
+				return false;
+			}
+		},
+		animation = deferred.promise({
+			elem: elem,
+			props: jQuery.extend( {}, properties ),
+			opts: jQuery.extend( true, { specialEasing: {} }, options ),
+			originalProperties: properties,
+			originalOptions: options,
+			startTime: fxNow || createFxNow(),
+			duration: options.duration,
+			tweens: [],
+			createTween: function( prop, end, easing ) {
+				var tween = jQuery.Tween( elem, animation.opts, prop, end,
+						animation.opts.specialEasing[ prop ] || animation.opts.easing );
+				animation.tweens.push( tween );
+				return tween;
+			},
+			stop: function( gotoEnd ) {
+				var index = 0,
+					// if we are going to the end, we want to run all the tweens
+					// otherwise we skip this part
+					length = gotoEnd ? animation.tweens.length : 0;
+
+				for ( ; index < length ; index++ ) {
+					animation.tweens[ index ].run( 1 );
+				}
+
+				// resolve when we played the last frame
+				// otherwise, reject
+				if ( gotoEnd ) {
+					deferred.resolveWith( elem, [ animation, gotoEnd ] );
+				} else {
+					deferred.rejectWith( elem, [ animation, gotoEnd ] );
+				}
+				return this;
+			}
+		}),
+		props = animation.props;
+
+	propFilter( props, animation.opts.specialEasing );
+
+	for ( ; index < length ; index++ ) {
+		result = animationPrefilters[ index ].call( animation, elem, props, animation.opts );
+		if ( result ) {
+			return result;
+		}
+	}
+
+	createTweens( animation, props );
+
+	if ( jQuery.isFunction( animation.opts.start ) ) {
+		animation.opts.start.call( elem, animation );
+	}
+
+	jQuery.fx.timer(
+		jQuery.extend( tick, {
+			anim: animation,
+			queue: animation.opts.queue,
+			elem: elem
+		})
+	);
+
+	// attach callbacks from options
+	return animation.progress( animation.opts.progress )
+		.done( animation.opts.done, animation.opts.complete )
+		.fail( animation.opts.fail )
+		.always( animation.opts.always );
+}
+
+function propFilter( props, specialEasing ) {
+	var index, name, easing, value, hooks;
+
+	// camelCase, specialEasing and expand cssHook pass
+	for ( index in props ) {
+		name = jQuery.camelCase( index );
+		easing = specialEasing[ name ];
+		value = props[ index ];
+		if ( jQuery.isArray( value ) ) {
+			easing = value[ 1 ];
+			value = props[ index ] = value[ 0 ];
+		}
+
+		if ( index !== name ) {
+			props[ name ] = value;
+			delete props[ index ];
+		}
+
+		hooks = jQuery.cssHooks[ name ];
+		if ( hooks && "expand" in hooks ) {
+			value = hooks.expand( value );
+			delete props[ name ];
+
+			// not quite $.extend, this wont overwrite keys already present.
+			// also - reusing 'index' from above because we have the correct "name"
+			for ( index in value ) {
+				if ( !( index in props ) ) {
+					props[ index ] = value[ index ];
+					specialEasing[ index ] = easing;
+				}
+			}
+		} else {
+			specialEasing[ name ] = easing;
+		}
+	}
+}
+
+jQuery.Animation = jQuery.extend( Animation, {
+
+	tweener: function( props, callback ) {
+		if ( jQuery.isFunction( props ) ) {
+			callback = props;
+			props = [ "*" ];
+		} else {
+			props = props.split(" ");
+		}
+
+		var prop,
+			index = 0,
+			length = props.length;
+
+		for ( ; index < length ; index++ ) {
+			prop = props[ index ];
+			tweeners[ prop ] = tweeners[ prop ] || [];
+			tweeners[ prop ].unshift( callback );
+		}
+	},
+
+	prefilter: function( callback, prepend ) {
+		if ( prepend ) {
+			animationPrefilters.unshift( callback );
+		} else {
+			animationPrefilters.push( callback );
+		}
+	}
+});
+
+function defaultPrefilter( elem, props, opts ) {
+	var index, prop, value, length, dataShow, toggle, tween, hooks, oldfire,
+		anim = this,
+		style = elem.style,
+		orig = {},
+		handled = [],
+		hidden = elem.nodeType && isHidden( elem );
+
+	// handle queue: false promises
+	if ( !opts.queue ) {
+		hooks = jQuery._queueHooks( elem, "fx" );
+		if ( hooks.unqueued == null ) {
+			hooks.unqueued = 0;
+			oldfire = hooks.empty.fire;
+			hooks.empty.fire = function() {
+				if ( !hooks.unqueued ) {
+					oldfire();
+				}
+			};
+		}
+		hooks.unqueued++;
+
+		anim.always(function() {
+			// doing this makes sure that the complete handler will be called
+			// before this completes
+			anim.always(function() {
+				hooks.unqueued--;
+				if ( !jQuery.queue( elem, "fx" ).length ) {
+					hooks.empty.fire();
+				}
+			});
+		});
+	}
+
+	// height/width overflow pass
+	if ( elem.nodeType === 1 && ( "height" in props || "width" in props ) ) {
+		// Make sure that nothing sneaks out
+		// Record all 3 overflow attributes because IE does not
+		// change the overflow attribute when overflowX and
+		// overflowY are set to the same value
+		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];
+
+		// Set display property to inline-block for height/width
+		// animations on inline elements that are having width/height animated
+		if ( jQuery.css( elem, "display" ) === "inline" &&
+				jQuery.css( elem, "float" ) === "none" ) {
+
+			// inline-level elements accept inline-block;
+			// block-level elements need to be inline with layout
+			if ( !jQuery.support.inlineBlockNeedsLayout || css_defaultDisplay( elem.nodeName ) === "inline" ) {
+				style.display = "inline-block";
+
+			} else {
+				style.zoom = 1;
+			}
+		}
+	}
+
+	if ( opts.overflow ) {
+		style.overflow = "hidden";
+		if ( !jQuery.support.shrinkWrapBlocks ) {
+			anim.done(function() {
+				style.overflow = opts.overflow[ 0 ];
+				style.overflowX = opts.overflow[ 1 ];
+				style.overflowY = opts.overflow[ 2 ];
+			});
+		}
+	}
+
+
+	// show/hide pass
+	for ( index in props ) {
+		value = props[ index ];
+		if ( rfxtypes.exec( value ) ) {
+			delete props[ index ];
+			toggle = toggle || value === "toggle";
+			if ( value === ( hidden ? "hide" : "show" ) ) {
+				continue;
+			}
+			handled.push( index );
+		}
+	}
+
+	length = handled.length;
+	if ( length ) {
+		dataShow = jQuery._data( elem, "fxshow" ) || jQuery._data( elem, "fxshow", {} );
+		if ( "hidden" in dataShow ) {
+			hidden = dataShow.hidden;
+		}
+
+		// store state if its toggle - enables .stop().toggle() to "reverse"
+		if ( toggle ) {
+			dataShow.hidden = !hidden;
+		}
+		if ( hidden ) {
+			jQuery( elem ).show();
+		} else {
+			anim.done(function() {
+				jQuery( elem ).hide();
+			});
+		}
+		anim.done(function() {
+			var prop;
+			jQuery.removeData( elem, "fxshow", true );
+			for ( prop in orig ) {
+				jQuery.style( elem, prop, orig[ prop ] );
+			}
+		});
+		for ( index = 0 ; index < length ; index++ ) {
+			prop = handled[ index ];
+			tween = anim.createTween( prop, hidden ? dataShow[ prop ] : 0 );
+			orig[ prop ] = dataShow[ prop ] || jQuery.style( elem, prop );
+
+			if ( !( prop in dataShow ) ) {
+				dataShow[ prop ] = tween.start;
+				if ( hidden ) {
+					tween.end = tween.start;
+					tween.start = prop === "width" || prop === "height" ? 1 : 0;
+				}
+			}
+		}
+	}
+}
+
+function Tween( elem, options, prop, end, easing ) {
+	return new Tween.prototype.init( elem, options, prop, end, easing );
+}
+jQuery.Tween = Tween;
+
+Tween.prototype = {
+	constructor: Tween,
+	init: function( elem, options, prop, end, easing, unit ) {
+		this.elem = elem;
+		this.prop = prop;
+		this.easing = easing || "swing";
+		this.options = options;
+		this.start = this.now = this.cur();
+		this.end = end;
+		this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
+	},
+	cur: function() {
+		var hooks = Tween.propHooks[ this.prop ];
+
+		return hooks && hooks.get ?
+			hooks.get( this ) :
+			Tween.propHooks._default.get( this );
+	},
+	run: function( percent ) {
+		var eased,
+			hooks = Tween.propHooks[ this.prop ];
+
+		if ( this.options.duration ) {
+			this.pos = eased = jQuery.easing[ this.easing ](
+				percent, this.options.duration * percent, 0, 1, this.options.duration
+			);
+		} else {
+			this.pos = eased = percent;
+		}
+		this.now = ( this.end - this.start ) * eased + this.start;
+
+		if ( this.options.step ) {
+			this.options.step.call( this.elem, this.now, this );
+		}
+
+		if ( hooks && hooks.set ) {
+			hooks.set( this );
+		} else {
+			Tween.propHooks._default.set( this );
+		}
+		return this;
+	}
+};
+
+Tween.prototype.init.prototype = Tween.prototype;
+
+Tween.propHooks = {
+	_default: {
+		get: function( tween ) {
+			var result;
+
+			if ( tween.elem[ tween.prop ] != null &&
+				(!tween.elem.style || tween.elem.style[ tween.prop ] == null) ) {
+				return tween.elem[ tween.prop ];
+			}
+
+			// passing any value as a 4th parameter to .css will automatically
+			// attempt a parseFloat and fallback to a string if the parse fails
+			// so, simple values such as "10px" are parsed to Float.
+			// complex values such as "rotate(1rad)" are returned as is.
+			result = jQuery.css( tween.elem, tween.prop, false, "" );
+			// Empty strings, null, undefined and "auto" are converted to 0.
+			return !result || result === "auto" ? 0 : result;
+		},
+		set: function( tween ) {
+			// use step hook for back compat - use cssHook if its there - use .style if its
+			// available and use plain properties where available
+			if ( jQuery.fx.step[ tween.prop ] ) {
+				jQuery.fx.step[ tween.prop ]( tween );
+			} else if ( tween.elem.style && ( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null || jQuery.cssHooks[ tween.prop ] ) ) {
+				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
+			} else {
+				tween.elem[ tween.prop ] = tween.now;
+			}
+		}
+	}
+};
+
+// Remove in 2.0 - this supports IE8's panic based approach
+// to setting things on disconnected nodes
+
+Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
+	set: function( tween ) {
+		if ( tween.elem.nodeType && tween.elem.parentNode ) {
+			tween.elem[ tween.prop ] = tween.now;
+		}
+	}
+};
+
+jQuery.each([ "toggle", "show", "hide" ], function( i, name ) {
+	var cssFn = jQuery.fn[ name ];
+	jQuery.fn[ name ] = function( speed, easing, callback ) {
+		return speed == null || typeof speed === "boolean" ||
+			// special check for .toggle( handler, handler, ... )
+			( !i && jQuery.isFunction( speed ) && jQuery.isFunction( easing ) ) ?
+			cssFn.apply( this, arguments ) :
+			this.animate( genFx( name, true ), speed, easing, callback );
+	};
+});
+
+jQuery.fn.extend({
+	fadeTo: function( speed, to, easing, callback ) {
+
+		// show any hidden elements after setting opacity to 0
+		return this.filter( isHidden ).css( "opacity", 0 ).show()
+
+			// animate to the value specified
+			.end().animate({ opacity: to }, speed, easing, callback );
+	},
+	animate: function( prop, speed, easing, callback ) {
+		var empty = jQuery.isEmptyObject( prop ),
+			optall = jQuery.speed( speed, easing, callback ),
+			doAnimation = function() {
+				// Operate on a copy of prop so per-property easing won't be lost
+				var anim = Animation( this, jQuery.extend( {}, prop ), optall );
+
+				// Empty animations resolve immediately
+				if ( empty ) {
+					anim.stop( true );
+				}
+			};
+
+		return empty || optall.queue === false ?
+			this.each( doAnimation ) :
+			this.queue( optall.queue, doAnimation );
+	},
+	stop: function( type, clearQueue, gotoEnd ) {
+		var stopQueue = function( hooks ) {
+			var stop = hooks.stop;
+			delete hooks.stop;
+			stop( gotoEnd );
+		};
+
+		if ( typeof type !== "string" ) {
+			gotoEnd = clearQueue;
+			clearQueue = type;
+			type = undefined;
+		}
+		if ( clearQueue && type !== false ) {
+			this.queue( type || "fx", [] );
+		}
+
+		return this.each(function() {
+			var dequeue = true,
+				index = type != null && type + "queueHooks",
+				timers = jQuery.timers,
+				data = jQuery._data( this );
+
+			if ( index ) {
+				if ( data[ index ] && data[ index ].stop ) {
+					stopQueue( data[ index ] );
+				}
+			} else {
+				for ( index in data ) {
+					if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
+						stopQueue( data[ index ] );
+					}
+				}
+			}
+
+			for ( index = timers.length; index--; ) {
+				if ( timers[ index ].elem === this && (type == null || timers[ index ].queue === type) ) {
+					timers[ index ].anim.stop( gotoEnd );
+					dequeue = false;
+					timers.splice( index, 1 );
+				}
+			}
+
+			// start the next in the queue if the last step wasn't forced
+			// timers currently will call their complete callbacks, which will dequeue
+			// but only if they were gotoEnd
+			if ( dequeue || !gotoEnd ) {
+				jQuery.dequeue( this, type );
+			}
+		});
+	}
+});
+
+// Generate parameters to create a standard animation
+function genFx( type, includeWidth ) {
+	var which,
+		attrs = { height: type },
+		i = 0;
+
+	// if we include width, step value is 1 to do all cssExpand values,
+	// if we don't include width, step value is 2 to skip over Left and Right
+	includeWidth = includeWidth? 1 : 0;
+	for( ; i < 4 ; i += 2 - includeWidth ) {
+		which = cssExpand[ i ];
+		attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
+	}
+
+	if ( includeWidth ) {
+		attrs.opacity = attrs.width = type;
+	}
+
+	return attrs;
+}
+
+// Generate shortcuts for custom animations
+jQuery.each({
+	slideDown: genFx("show"),
+	slideUp: genFx("hide"),
+	slideToggle: genFx("toggle"),
+	fadeIn: { opacity: "show" },
+	fadeOut: { opacity: "hide" },
+	fadeToggle: { opacity: "toggle" }
+}, function( name, props ) {
+	jQuery.fn[ name ] = function( speed, easing, callback ) {
+		return this.animate( props, speed, easing, callback );
+	};
+});
+
+jQuery.speed = function( speed, easing, fn ) {
+	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
+		complete: fn || !fn && easing ||
+			jQuery.isFunction( speed ) && speed,
+		duration: speed,
+		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
+	};
+
+	opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
+		opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[ opt.duration ] : jQuery.fx.speeds._default;
+
+	// normalize opt.queue - true/undefined/null -> "fx"
+	if ( opt.queue == null || opt.queue === true ) {
+		opt.queue = "fx";
+	}
+
+	// Queueing
+	opt.old = opt.complete;
+
+	opt.complete = function() {
+		if ( jQuery.isFunction( opt.old ) ) {
+			opt.old.call( this );
+		}
+
+		if ( opt.queue ) {
+			jQuery.dequeue( this, opt.queue );
+		}
+	};
+
+	return opt;
+};
+
+jQuery.easing = {
+	linear: function( p ) {
+		return p;
+	},
+	swing: function( p ) {
+		return 0.5 - Math.cos( p*Math.PI ) / 2;
+	}
+};
+
+jQuery.timers = [];
+jQuery.fx = Tween.prototype.init;
+jQuery.fx.tick = function() {
+	var timer,
+		timers = jQuery.timers,
+		i = 0;
+
+	fxNow = jQuery.now();
+
+	for ( ; i < timers.length; i++ ) {
+		timer = timers[ i ];
+		// Checks the timer has not already been removed
+		if ( !timer() && timers[ i ] === timer ) {
+			timers.splice( i--, 1 );
+		}
+	}
+
+	if ( !timers.length ) {
+		jQuery.fx.stop();
+	}
+	fxNow = undefined;
+};
+
+jQuery.fx.timer = function( timer ) {
+	if ( timer() && jQuery.timers.push( timer ) && !timerId ) {
+		timerId = setInterval( jQuery.fx.tick, jQuery.fx.interval );
+	}
+};
+
+jQuery.fx.interval = 13;
+
+jQuery.fx.stop = function() {
+	clearInterval( timerId );
+	timerId = null;
+};
+
+jQuery.fx.speeds = {
+	slow: 600,
+	fast: 200,
+	// Default speed
+	_default: 400
+};
+
+// Back Compat <1.8 extension point
+jQuery.fx.step = {};
+
+if ( jQuery.expr && jQuery.expr.filters ) {
+	jQuery.expr.filters.animated = function( elem ) {
+		return jQuery.grep(jQuery.timers, function( fn ) {
+			return elem === fn.elem;
+		}).length;
+	};
+}
+var rroot = /^(?:body|html)$/i;
+
+jQuery.fn.offset = function( options ) {
+	if ( arguments.length ) {
+		return options === undefined ?
+			this :
+			this.each(function( i ) {
+				jQuery.offset.setOffset( this, options, i );
+			});
+	}
+
+	var docElem, body, win, clientTop, clientLeft, scrollTop, scrollLeft,
+		box = { top: 0, left: 0 },
+		elem = this[ 0 ],
+		doc = elem && elem.ownerDocument;
+
+	if ( !doc ) {
+		return;
+	}
+
+	if ( (body = doc.body) === elem ) {
+		return jQuery.offset.bodyOffset( elem );
+	}
+
+	docElem = doc.documentElement;
+
+	// Make sure it's not a disconnected DOM node
+	if ( !jQuery.contains( docElem, elem ) ) {
+		return box;
+	}
+
+	// If we don't have gBCR, just use 0,0 rather than error
+	// BlackBerry 5, iOS 3 (original iPhone)
+	if ( typeof elem.getBoundingClientRect !== "undefined" ) {
+		box = elem.getBoundingClientRect();
+	}
+	win = getWindow( doc );
+	clientTop  = docElem.clientTop  || body.clientTop  || 0;
+	clientLeft = docElem.clientLeft || body.clientLeft || 0;
+	scrollTop  = win.pageYOffset || docElem.scrollTop;
+	scrollLeft = win.pageXOffset || docElem.scrollLeft;
+	return {
+		top: box.top  + scrollTop  - clientTop,
+		left: box.left + scrollLeft - clientLeft
+	};
+};
+
+jQuery.offset = {
+
+	bodyOffset: function( body ) {
+		var top = body.offsetTop,
+			left = body.offsetLeft;
+
+		if ( jQuery.support.doesNotIncludeMarginInBodyOffset ) {
+			top  += parseFloat( jQuery.css(body, "marginTop") ) || 0;
+			left += parseFloat( jQuery.css(body, "marginLeft") ) || 0;
+		}
+
+		return { top: top, left: left };
+	},
+
+	setOffset: function( elem, options, i ) {
+		var position = jQuery.css( elem, "position" );
+
+		// set position first, in-case top/left are set even on static elem
+		if ( position === "static" ) {
+			elem.style.position = "relative";
+		}
+
+		var curElem = jQuery( elem ),
+			curOffset = curElem.offset(),
+			curCSSTop = jQuery.css( elem, "top" ),
+			curCSSLeft = jQuery.css( elem, "left" ),
+			calculatePosition = ( position === "absolute" || position === "fixed" ) && jQuery.inArray("auto", [curCSSTop, curCSSLeft]) > -1,
+			props = {}, curPosition = {}, curTop, curLeft;
+
+		// need to be able to calculate position if either top or left is auto and position is either absolute or fixed
+		if ( calculatePosition ) {
+			curPosition = curElem.position();
+			curTop = curPosition.top;
+			curLeft = curPosition.left;
+		} else {
+			curTop = parseFloat( curCSSTop ) || 0;
+			curLeft = parseFloat( curCSSLeft ) || 0;
+		}
+
+		if ( jQuery.isFunction( options ) ) {
+			options = options.call( elem, i, curOffset );
+		}
+
+		if ( options.top != null ) {
+			props.top = ( options.top - curOffset.top ) + curTop;
+		}
+		if ( options.left != null ) {
+			props.left = ( options.left - curOffset.left ) + curLeft;
+		}
+
+		if ( "using" in options ) {
+			options.using.call( elem, props );
+		} else {
+			curElem.css( props );
+		}
+	}
+};
+
+
+jQuery.fn.extend({
+
+	position: function() {
+		if ( !this[0] ) {
+			return;
+		}
+
+		var elem = this[0],
+
+		// Get *real* offsetParent
+		offsetParent = this.offsetParent(),
+
+		// Get correct offsets
+		offset       = this.offset(),
+		parentOffset = rroot.test(offsetParent[0].nodeName) ? { top: 0, left: 0 } : offsetParent.offset();
+
+		// Subtract element margins
+		// note: when an element has margin: auto the offsetLeft and marginLeft
+		// are the same in Safari causing offset.left to incorrectly be 0
+		offset.top  -= parseFloat( jQuery.css(elem, "marginTop") ) || 0;
+		offset.left -= parseFloat( jQuery.css(elem, "marginLeft") ) || 0;
+
+		// Add offsetParent borders
+		parentOffset.top  += parseFloat( jQuery.css(offsetParent[0], "borderTopWidth") ) || 0;
+		parentOffset.left += parseFloat( jQuery.css(offsetParent[0], "borderLeftWidth") ) || 0;
+
+		// Subtract the two offsets
+		return {
+			top:  offset.top  - parentOffset.top,
+			left: offset.left - parentOffset.left
+		};
+	},
+
+	offsetParent: function() {
+		return this.map(function() {
+			var offsetParent = this.offsetParent || document.body;
+			while ( offsetParent && (!rroot.test(offsetParent.nodeName) && jQuery.css(offsetParent, "position") === "static") ) {
+				offsetParent = offsetParent.offsetParent;
+			}
+			return offsetParent || document.body;
+		});
+	}
+});
+
+
+// Create scrollLeft and scrollTop methods
+jQuery.each( {scrollLeft: "pageXOffset", scrollTop: "pageYOffset"}, function( method, prop ) {
+	var top = /Y/.test( prop );
+
+	jQuery.fn[ method ] = function( val ) {
+		return jQuery.access( this, function( elem, method, val ) {
+			var win = getWindow( elem );
+
+			if ( val === undefined ) {
+				return win ? (prop in win) ? win[ prop ] :
+					win.document.documentElement[ method ] :
+					elem[ method ];
+			}
+
+			if ( win ) {
+				win.scrollTo(
+					!top ? val : jQuery( win ).scrollLeft(),
+					 top ? val : jQuery( win ).scrollTop()
+				);
+
+			} else {
+				elem[ method ] = val;
+			}
+		}, method, val, arguments.length, null );
+	};
+});
+
+function getWindow( elem ) {
+	return jQuery.isWindow( elem ) ?
+		elem :
+		elem.nodeType === 9 ?
+			elem.defaultView || elem.parentWindow :
+			false;
+}
+// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
+jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
+	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name }, function( defaultExtra, funcName ) {
+		// margin is only for outerHeight, outerWidth
+		jQuery.fn[ funcName ] = function( margin, value ) {
+			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
+				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );
+
+			return jQuery.access( this, function( elem, type, value ) {
+				var doc;
+
+				if ( jQuery.isWindow( elem ) ) {
+					// As of 5/8/2012 this will yield incorrect results for Mobile Safari, but there
+					// isn't a whole lot we can do. See pull request at this URL for discussion:
+					// https://github.com/jquery/jquery/pull/764
+					return elem.document.documentElement[ "client" + name ];
+				}
+
+				// Get document width or height
+				if ( elem.nodeType === 9 ) {
+					doc = elem.documentElement;
+
+					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height], whichever is greatest
+					// unfortunately, this causes bug #3838 in IE6/8 only, but there is currently no good, small way to fix it.
+					return Math.max(
+						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
+						elem.body[ "offset" + name ], doc[ "offset" + name ],
+						doc[ "client" + name ]
+					);
+				}
+
+				return value === undefined ?
+					// Get width or height on the element, requesting but not forcing parseFloat
+					jQuery.css( elem, type, value, extra ) :
+
+					// Set width or height on the element
+					jQuery.style( elem, type, value, extra );
+			}, type, chainable ? margin : undefined, chainable, null );
+		};
+	});
+});
+// Expose jQuery to the global object
+window.jQuery = window.$ = jQuery;
+
+// Expose jQuery as an AMD module, but only for AMD loaders that
+// understand the issues with loading multiple versions of jQuery
+// in a page that all might call define(). The loader will indicate
+// they have special allowances for multiple jQuery versions by
+// specifying define.amd.jQuery = true. Register as a named module,
+// since jQuery can be concatenated with other files that may use define,
+// but not use a proper concatenation script that understands anonymous
+// AMD modules. A named AMD is safest and most robust way to register.
+// Lowercase jquery is used because AMD module names are derived from
+// file names, and jQuery is normally delivered in a lowercase file name.
+// Do this after creating the global so that if an AMD module wants to call
+// noConflict to hide this version of jQuery, it will work.
+if ( typeof define === "function" && define.amd && define.amd.jQuery ) {
+	define( "jquery", [], function () { return jQuery; } );
+}
+
+})( window );
diff --git a/frontend/js/lib/underscore.js b/frontend/js/lib/underscore.js
new file mode 100644
index 0000000..4d83099
--- /dev/null
+++ b/frontend/js/lib/underscore.js
@@ -0,0 +1,1221 @@
+//     Underscore.js 1.4.3
+//     http://underscorejs.org
+//     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
+//     Underscore may be freely distributed under the MIT license.
+
+(function() {
+
+  // Baseline setup
+  // --------------
+
+  // Establish the root object, `window` in the browser, or `global` on the server.
+  var root = this;
+
+  // Save the previous value of the `_` variable.
+  var previousUnderscore = root._;
+
+  // Establish the object that gets returned to break out of a loop iteration.
+  var breaker = {};
+
+  // Save bytes in the minified (but not gzipped) version:
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
+
+  // Create quick reference variables for speed access to core prototypes.
+  var push             = ArrayProto.push,
+      slice            = ArrayProto.slice,
+      concat           = ArrayProto.concat,
+      toString         = ObjProto.toString,
+      hasOwnProperty   = ObjProto.hasOwnProperty;
+
+  // All **ECMAScript 5** native function implementations that we hope to use
+  // are declared here.
+  var
+    nativeForEach      = ArrayProto.forEach,
+    nativeMap          = ArrayProto.map,
+    nativeReduce       = ArrayProto.reduce,
+    nativeReduceRight  = ArrayProto.reduceRight,
+    nativeFilter       = ArrayProto.filter,
+    nativeEvery        = ArrayProto.every,
+    nativeSome         = ArrayProto.some,
+    nativeIndexOf      = ArrayProto.indexOf,
+    nativeLastIndexOf  = ArrayProto.lastIndexOf,
+    nativeIsArray      = Array.isArray,
+    nativeKeys         = Object.keys,
+    nativeBind         = FuncProto.bind;
+
+  // Create a safe reference to the Underscore object for use below.
+  var _ = function(obj) {
+    if (obj instanceof _) return obj;
+    if (!(this instanceof _)) return new _(obj);
+    this._wrapped = obj;
+  };
+
+  // Export the Underscore object for **Node.js**, with
+  // backwards-compatibility for the old `require()` API. If we're in
+  // the browser, add `_` as a global object via a string identifier,
+  // for Closure Compiler "advanced" mode.
+  if (typeof exports !== 'undefined') {
+    if (typeof module !== 'undefined' && module.exports) {
+      exports = module.exports = _;
+    }
+    exports._ = _;
+  } else {
+    root._ = _;
+  }
+
+  // Current version.
+  _.VERSION = '1.4.3';
+
+  // Collection Functions
+  // --------------------
+
+  // The cornerstone, an `each` implementation, aka `forEach`.
+  // Handles objects with the built-in `forEach`, arrays, and raw objects.
+  // Delegates to **ECMAScript 5**'s native `forEach` if available.
+  var each = _.each = _.forEach = function(obj, iterator, context) {
+    if (obj == null) return;
+    if (nativeForEach && obj.forEach === nativeForEach) {
+      obj.forEach(iterator, context);
+    } else if (obj.length === +obj.length) {
+      for (var i = 0, l = obj.length; i < l; i++) {
+        if (iterator.call(context, obj[i], i, obj) === breaker) return;
+      }
+    } else {
+      for (var key in obj) {
+        if (_.has(obj, key)) {
+          if (iterator.call(context, obj[key], key, obj) === breaker) return;
+        }
+      }
+    }
+  };
+
+  // Return the results of applying the iterator to each element.
+  // Delegates to **ECMAScript 5**'s native `map` if available.
+  _.map = _.collect = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
+    each(obj, function(value, index, list) {
+      results[results.length] = iterator.call(context, value, index, list);
+    });
+    return results;
+  };
+
+  var reduceError = 'Reduce of empty array with no initial value';
+
+  // **Reduce** builds up a single result from a list of values, aka `inject`,
+  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
+  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduce && obj.reduce === nativeReduce) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
+    }
+    each(obj, function(value, index, list) {
+      if (!initial) {
+        memo = value;
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, value, index, list);
+      }
+    });
+    if (!initial) throw new TypeError(reduceError);
+    return memo;
+  };
+
+  // The right-associative version of reduce, also known as `foldr`.
+  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
+  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
+    }
+    var length = obj.length;
+    if (length !== +length) {
+      var keys = _.keys(obj);
+      length = keys.length;
+    }
+    each(obj, function(value, index, list) {
+      index = keys ? keys[--length] : --length;
+      if (!initial) {
+        memo = obj[index];
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, obj[index], index, list);
+      }
+    });
+    if (!initial) throw new TypeError(reduceError);
+    return memo;
+  };
+
+  // Return the first value which passes a truth test. Aliased as `detect`.
+  _.find = _.detect = function(obj, iterator, context) {
+    var result;
+    any(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) {
+        result = value;
+        return true;
+      }
+    });
+    return result;
+  };
+
+  // Return all the elements that pass a truth test.
+  // Delegates to **ECMAScript 5**'s native `filter` if available.
+  // Aliased as `select`.
+  _.filter = _.select = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
+    each(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) results[results.length] = value;
+    });
+    return results;
+  };
+
+  // Return all the elements for which a truth test fails.
+  _.reject = function(obj, iterator, context) {
+    return _.filter(obj, function(value, index, list) {
+      return !iterator.call(context, value, index, list);
+    }, context);
+  };
+
+  // Determine whether all of the elements match a truth test.
+  // Delegates to **ECMAScript 5**'s native `every` if available.
+  // Aliased as `all`.
+  _.every = _.all = function(obj, iterator, context) {
+    iterator || (iterator = _.identity);
+    var result = true;
+    if (obj == null) return result;
+    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
+    each(obj, function(value, index, list) {
+      if (!(result = result && iterator.call(context, value, index, list))) return breaker;
+    });
+    return !!result;
+  };
+
+  // Determine if at least one element in the object matches a truth test.
+  // Delegates to **ECMAScript 5**'s native `some` if available.
+  // Aliased as `any`.
+  var any = _.some = _.any = function(obj, iterator, context) {
+    iterator || (iterator = _.identity);
+    var result = false;
+    if (obj == null) return result;
+    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
+    each(obj, function(value, index, list) {
+      if (result || (result = iterator.call(context, value, index, list))) return breaker;
+    });
+    return !!result;
+  };
+
+  // Determine if the array or object contains a given value (using `===`).
+  // Aliased as `include`.
+  _.contains = _.include = function(obj, target) {
+    if (obj == null) return false;
+    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
+    return any(obj, function(value) {
+      return value === target;
+    });
+  };
+
+  // Invoke a method (with arguments) on every item in a collection.
+  _.invoke = function(obj, method) {
+    var args = slice.call(arguments, 2);
+    return _.map(obj, function(value) {
+      return (_.isFunction(method) ? method : value[method]).apply(value, args);
+    });
+  };
+
+  // Convenience version of a common use case of `map`: fetching a property.
+  _.pluck = function(obj, key) {
+    return _.map(obj, function(value){ return value[key]; });
+  };
+
+  // Convenience version of a common use case of `filter`: selecting only objects
+  // with specific `key:value` pairs.
+  _.where = function(obj, attrs) {
+    if (_.isEmpty(attrs)) return [];
+    return _.filter(obj, function(value) {
+      for (var key in attrs) {
+        if (attrs[key] !== value[key]) return false;
+      }
+      return true;
+    });
+  };
+
+  // Return the maximum element or (element-based computation).
+  // Can't optimize arrays of integers longer than 65,535 elements.
+  // See: https://bugs.webkit.org/show_bug.cgi?id=80797
+  _.max = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+      return Math.max.apply(Math, obj);
+    }
+    if (!iterator && _.isEmpty(obj)) return -Infinity;
+    var result = {computed : -Infinity, value: -Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed >= result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Return the minimum element (or element-based computation).
+  _.min = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+      return Math.min.apply(Math, obj);
+    }
+    if (!iterator && _.isEmpty(obj)) return Infinity;
+    var result = {computed : Infinity, value: Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed < result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Shuffle an array.
+  _.shuffle = function(obj) {
+    var rand;
+    var index = 0;
+    var shuffled = [];
+    each(obj, function(value) {
+      rand = _.random(index++);
+      shuffled[index - 1] = shuffled[rand];
+      shuffled[rand] = value;
+    });
+    return shuffled;
+  };
+
+  // An internal function to generate lookup iterators.
+  var lookupIterator = function(value) {
+    return _.isFunction(value) ? value : function(obj){ return obj[value]; };
+  };
+
+  // Sort the object's values by a criterion produced by an iterator.
+  _.sortBy = function(obj, value, context) {
+    var iterator = lookupIterator(value);
+    return _.pluck(_.map(obj, function(value, index, list) {
+      return {
+        value : value,
+        index : index,
+        criteria : iterator.call(context, value, index, list)
+      };
+    }).sort(function(left, right) {
+      var a = left.criteria;
+      var b = right.criteria;
+      if (a !== b) {
+        if (a > b || a === void 0) return 1;
+        if (a < b || b === void 0) return -1;
+      }
+      return left.index < right.index ? -1 : 1;
+    }), 'value');
+  };
+
+  // An internal function used for aggregate "group by" operations.
+  var group = function(obj, value, context, behavior) {
+    var result = {};
+    var iterator = lookupIterator(value || _.identity);
+    each(obj, function(value, index) {
+      var key = iterator.call(context, value, index, obj);
+      behavior(result, key, value);
+    });
+    return result;
+  };
+
+  // Groups the object's values by a criterion. Pass either a string attribute
+  // to group by, or a function that returns the criterion.
+  _.groupBy = function(obj, value, context) {
+    return group(obj, value, context, function(result, key, value) {
+      (_.has(result, key) ? result[key] : (result[key] = [])).push(value);
+    });
+  };
+
+  // Counts instances of an object that group by a certain criterion. Pass
+  // either a string attribute to count by, or a function that returns the
+  // criterion.
+  _.countBy = function(obj, value, context) {
+    return group(obj, value, context, function(result, key) {
+      if (!_.has(result, key)) result[key] = 0;
+      result[key]++;
+    });
+  };
+
+  // Use a comparator function to figure out the smallest index at which
+  // an object should be inserted so as to maintain order. Uses binary search.
+  _.sortedIndex = function(array, obj, iterator, context) {
+    iterator = iterator == null ? _.identity : lookupIterator(iterator);
+    var value = iterator.call(context, obj);
+    var low = 0, high = array.length;
+    while (low < high) {
+      var mid = (low + high) >>> 1;
+      iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid;
+    }
+    return low;
+  };
+
+  // Safely convert anything iterable into a real, live array.
+  _.toArray = function(obj) {
+    if (!obj) return [];
+    if (_.isArray(obj)) return slice.call(obj);
+    if (obj.length === +obj.length) return _.map(obj, _.identity);
+    return _.values(obj);
+  };
+
+  // Return the number of elements in an object.
+  _.size = function(obj) {
+    if (obj == null) return 0;
+    return (obj.length === +obj.length) ? obj.length : _.keys(obj).length;
+  };
+
+  // Array Functions
+  // ---------------
+
+  // Get the first element of an array. Passing **n** will return the first N
+  // values in the array. Aliased as `head` and `take`. The **guard** check
+  // allows it to work with `_.map`.
+  _.first = _.head = _.take = function(array, n, guard) {
+    if (array == null) return void 0;
+    return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
+  };
+
+  // Returns everything but the last entry of the array. Especially useful on
+  // the arguments object. Passing **n** will return all the values in
+  // the array, excluding the last N. The **guard** check allows it to work with
+  // `_.map`.
+  _.initial = function(array, n, guard) {
+    return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
+  };
+
+  // Get the last element of an array. Passing **n** will return the last N
+  // values in the array. The **guard** check allows it to work with `_.map`.
+  _.last = function(array, n, guard) {
+    if (array == null) return void 0;
+    if ((n != null) && !guard) {
+      return slice.call(array, Math.max(array.length - n, 0));
+    } else {
+      return array[array.length - 1];
+    }
+  };
+
+  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
+  // Especially useful on the arguments object. Passing an **n** will return
+  // the rest N values in the array. The **guard**
+  // check allows it to work with `_.map`.
+  _.rest = _.tail = _.drop = function(array, n, guard) {
+    return slice.call(array, (n == null) || guard ? 1 : n);
+  };
+
+  // Trim out all falsy values from an array.
+  _.compact = function(array) {
+    return _.filter(array, _.identity);
+  };
+
+  // Internal implementation of a recursive `flatten` function.
+  var flatten = function(input, shallow, output) {
+    each(input, function(value) {
+      if (_.isArray(value)) {
+        shallow ? push.apply(output, value) : flatten(value, shallow, output);
+      } else {
+        output.push(value);
+      }
+    });
+    return output;
+  };
+
+  // Return a completely flattened version of an array.
+  _.flatten = function(array, shallow) {
+    return flatten(array, shallow, []);
+  };
+
+  // Return a version of the array that does not contain the specified value(s).
+  _.without = function(array) {
+    return _.difference(array, slice.call(arguments, 1));
+  };
+
+  // Produce a duplicate-free version of the array. If the array has already
+  // been sorted, you have the option of using a faster algorithm.
+  // Aliased as `unique`.
+  _.uniq = _.unique = function(array, isSorted, iterator, context) {
+    if (_.isFunction(isSorted)) {
+      context = iterator;
+      iterator = isSorted;
+      isSorted = false;
+    }
+    var initial = iterator ? _.map(array, iterator, context) : array;
+    var results = [];
+    var seen = [];
+    each(initial, function(value, index) {
+      if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) {
+        seen.push(value);
+        results.push(array[index]);
+      }
+    });
+    return results;
+  };
+
+  // Produce an array that contains the union: each distinct element from all of
+  // the passed-in arrays.
+  _.union = function() {
+    return _.uniq(concat.apply(ArrayProto, arguments));
+  };
+
+  // Produce an array that contains every item shared between all the
+  // passed-in arrays.
+  _.intersection = function(array) {
+    var rest = slice.call(arguments, 1);
+    return _.filter(_.uniq(array), function(item) {
+      return _.every(rest, function(other) {
+        return _.indexOf(other, item) >= 0;
+      });
+    });
+  };
+
+  // Take the difference between one array and a number of other arrays.
+  // Only the elements present in just the first array will remain.
+  _.difference = function(array) {
+    var rest = concat.apply(ArrayProto, slice.call(arguments, 1));
+    return _.filter(array, function(value){ return !_.contains(rest, value); });
+  };
+
+  // Zip together multiple lists into a single array -- elements that share
+  // an index go together.
+  _.zip = function() {
+    var args = slice.call(arguments);
+    var length = _.max(_.pluck(args, 'length'));
+    var results = new Array(length);
+    for (var i = 0; i < length; i++) {
+      results[i] = _.pluck(args, "" + i);
+    }
+    return results;
+  };
+
+  // Converts lists into objects. Pass either a single array of `[key, value]`
+  // pairs, or two parallel arrays of the same length -- one of keys, and one of
+  // the corresponding values.
+  _.object = function(list, values) {
+    if (list == null) return {};
+    var result = {};
+    for (var i = 0, l = list.length; i < l; i++) {
+      if (values) {
+        result[list[i]] = values[i];
+      } else {
+        result[list[i][0]] = list[i][1];
+      }
+    }
+    return result;
+  };
+
+  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
+  // we need this function. Return the position of the first occurrence of an
+  // item in an array, or -1 if the item is not included in the array.
+  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
+  // If the array is large and already in sort order, pass `true`
+  // for **isSorted** to use binary search.
+  _.indexOf = function(array, item, isSorted) {
+    if (array == null) return -1;
+    var i = 0, l = array.length;
+    if (isSorted) {
+      if (typeof isSorted == 'number') {
+        i = (isSorted < 0 ? Math.max(0, l + isSorted) : isSorted);
+      } else {
+        i = _.sortedIndex(array, item);
+        return array[i] === item ? i : -1;
+      }
+    }
+    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted);
+    for (; i < l; i++) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
+  _.lastIndexOf = function(array, item, from) {
+    if (array == null) return -1;
+    var hasIndex = from != null;
+    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
+      return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);
+    }
+    var i = (hasIndex ? from : array.length);
+    while (i--) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Generate an integer Array containing an arithmetic progression. A port of
+  // the native Python `range()` function. See
+  // [the Python documentation](http://docs.python.org/library/functions.html#range).
+  _.range = function(start, stop, step) {
+    if (arguments.length <= 1) {
+      stop = start || 0;
+      start = 0;
+    }
+    step = arguments[2] || 1;
+
+    var len = Math.max(Math.ceil((stop - start) / step), 0);
+    var idx = 0;
+    var range = new Array(len);
+
+    while(idx < len) {
+      range[idx++] = start;
+      start += step;
+    }
+
+    return range;
+  };
+
+  // Function (ahem) Functions
+  // ------------------
+
+  // Reusable constructor function for prototype setting.
+  var ctor = function(){};
+
+  // Create a function bound to a given object (assigning `this`, and arguments,
+  // optionally). Binding with arguments is also known as `curry`.
+  // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
+  // We check for `func.bind` first, to fail fast when `func` is undefined.
+  _.bind = function(func, context) {
+    var args, bound;
+    if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
+    if (!_.isFunction(func)) throw new TypeError;
+    args = slice.call(arguments, 2);
+    return bound = function() {
+      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
+      ctor.prototype = func.prototype;
+      var self = new ctor;
+      ctor.prototype = null;
+      var result = func.apply(self, args.concat(slice.call(arguments)));
+      if (Object(result) === result) return result;
+      return self;
+    };
+  };
+
+  // Bind all of an object's methods to that object. Useful for ensuring that
+  // all callbacks defined on an object belong to it.
+  _.bindAll = function(obj) {
+    var funcs = slice.call(arguments, 1);
+    if (funcs.length == 0) funcs = _.functions(obj);
+    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+    return obj;
+  };
+
+  // Memoize an expensive function by storing its results.
+  _.memoize = function(func, hasher) {
+    var memo = {};
+    hasher || (hasher = _.identity);
+    return function() {
+      var key = hasher.apply(this, arguments);
+      return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
+    };
+  };
+
+  // Delays a function for the given number of milliseconds, and then calls
+  // it with the arguments supplied.
+  _.delay = function(func, wait) {
+    var args = slice.call(arguments, 2);
+    return setTimeout(function(){ return func.apply(null, args); }, wait);
+  };
+
+  // Defers a function, scheduling it to run after the current call stack has
+  // cleared.
+  _.defer = function(func) {
+    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
+  };
+
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time.
+  _.throttle = function(func, wait) {
+    var context, args, timeout, result;
+    var previous = 0;
+    var later = function() {
+      previous = new Date;
+      timeout = null;
+      result = func.apply(context, args);
+    };
+    return function() {
+      var now = new Date;
+      var remaining = wait - (now - previous);
+      context = this;
+      args = arguments;
+      if (remaining <= 0) {
+        clearTimeout(timeout);
+        timeout = null;
+        previous = now;
+        result = func.apply(context, args);
+      } else if (!timeout) {
+        timeout = setTimeout(later, remaining);
+      }
+      return result;
+    };
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds. If `immediate` is passed, trigger the function on the
+  // leading edge, instead of the trailing.
+  _.debounce = function(func, wait, immediate) {
+    var timeout, result;
+    return function() {
+      var context = this, args = arguments;
+      var later = function() {
+        timeout = null;
+        if (!immediate) result = func.apply(context, args);
+      };
+      var callNow = immediate && !timeout;
+      clearTimeout(timeout);
+      timeout = setTimeout(later, wait);
+      if (callNow) result = func.apply(context, args);
+      return result;
+    };
+  };
+
+  // Returns a function that will be executed at most one time, no matter how
+  // often you call it. Useful for lazy initialization.
+  _.once = function(func) {
+    var ran = false, memo;
+    return function() {
+      if (ran) return memo;
+      ran = true;
+      memo = func.apply(this, arguments);
+      func = null;
+      return memo;
+    };
+  };
+
+  // Returns the first function passed as an argument to the second,
+  // allowing you to adjust arguments, run code before and after, and
+  // conditionally execute the original function.
+  _.wrap = function(func, wrapper) {
+    return function() {
+      var args = [func];
+      push.apply(args, arguments);
+      return wrapper.apply(this, args);
+    };
+  };
+
+  // Returns a function that is the composition of a list of functions, each
+  // consuming the return value of the function that follows.
+  _.compose = function() {
+    var funcs = arguments;
+    return function() {
+      var args = arguments;
+      for (var i = funcs.length - 1; i >= 0; i--) {
+        args = [funcs[i].apply(this, args)];
+      }
+      return args[0];
+    };
+  };
+
+  // Returns a function that will only be executed after being called N times.
+  _.after = function(times, func) {
+    if (times <= 0) return func();
+    return function() {
+      if (--times < 1) {
+        return func.apply(this, arguments);
+      }
+    };
+  };
+
+  // Object Functions
+  // ----------------
+
+  // Retrieve the names of an object's properties.
+  // Delegates to **ECMAScript 5**'s native `Object.keys`
+  _.keys = nativeKeys || function(obj) {
+    if (obj !== Object(obj)) throw new TypeError('Invalid object');
+    var keys = [];
+    for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
+    return keys;
+  };
+
+  // Retrieve the values of an object's properties.
+  _.values = function(obj) {
+    var values = [];
+    for (var key in obj) if (_.has(obj, key)) values.push(obj[key]);
+    return values;
+  };
+
+  // Convert an object into a list of `[key, value]` pairs.
+  _.pairs = function(obj) {
+    var pairs = [];
+    for (var key in obj) if (_.has(obj, key)) pairs.push([key, obj[key]]);
+    return pairs;
+  };
+
+  // Invert the keys and values of an object. The values must be serializable.
+  _.invert = function(obj) {
+    var result = {};
+    for (var key in obj) if (_.has(obj, key)) result[obj[key]] = key;
+    return result;
+  };
+
+  // Return a sorted list of the function names available on the object.
+  // Aliased as `methods`
+  _.functions = _.methods = function(obj) {
+    var names = [];
+    for (var key in obj) {
+      if (_.isFunction(obj[key])) names.push(key);
+    }
+    return names.sort();
+  };
+
+  // Extend a given object with all the properties in passed-in object(s).
+  _.extend = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      if (source) {
+        for (var prop in source) {
+          obj[prop] = source[prop];
+        }
+      }
+    });
+    return obj;
+  };
+
+  // Return a copy of the object only containing the whitelisted properties.
+  _.pick = function(obj) {
+    var copy = {};
+    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+    each(keys, function(key) {
+      if (key in obj) copy[key] = obj[key];
+    });
+    return copy;
+  };
+
+   // Return a copy of the object without the blacklisted properties.
+  _.omit = function(obj) {
+    var copy = {};
+    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+    for (var key in obj) {
+      if (!_.contains(keys, key)) copy[key] = obj[key];
+    }
+    return copy;
+  };
+
+  // Fill in a given object with default properties.
+  _.defaults = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      if (source) {
+        for (var prop in source) {
+          if (obj[prop] == null) obj[prop] = source[prop];
+        }
+      }
+    });
+    return obj;
+  };
+
+  // Create a (shallow-cloned) duplicate of an object.
+  _.clone = function(obj) {
+    if (!_.isObject(obj)) return obj;
+    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
+  };
+
+  // Invokes interceptor with the obj, and then returns obj.
+  // The primary purpose of this method is to "tap into" a method chain, in
+  // order to perform operations on intermediate results within the chain.
+  _.tap = function(obj, interceptor) {
+    interceptor(obj);
+    return obj;
+  };
+
+  // Internal recursive comparison function for `isEqual`.
+  var eq = function(a, b, aStack, bStack) {
+    // Identical objects are equal. `0 === -0`, but they aren't identical.
+    // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
+    if (a === b) return a !== 0 || 1 / a == 1 / b;
+    // A strict comparison is necessary because `null == undefined`.
+    if (a == null || b == null) return a === b;
+    // Unwrap any wrapped objects.
+    if (a instanceof _) a = a._wrapped;
+    if (b instanceof _) b = b._wrapped;
+    // Compare `[[Class]]` names.
+    var className = toString.call(a);
+    if (className != toString.call(b)) return false;
+    switch (className) {
+      // Strings, numbers, dates, and booleans are compared by value.
+      case '[object String]':
+        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
+        // equivalent to `new String("5")`.
+        return a == String(b);
+      case '[object Number]':
+        // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
+        // other numeric values.
+        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
+      case '[object Date]':
+      case '[object Boolean]':
+        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
+        // millisecond representations. Note that invalid dates with millisecond representations
+        // of `NaN` are not equivalent.
+        return +a == +b;
+      // RegExps are compared by their source patterns and flags.
+      case '[object RegExp]':
+        return a.source == b.source &&
+               a.global == b.global &&
+               a.multiline == b.multiline &&
+               a.ignoreCase == b.ignoreCase;
+    }
+    if (typeof a != 'object' || typeof b != 'object') return false;
+    // Assume equality for cyclic structures. The algorithm for detecting cyclic
+    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
+    var length = aStack.length;
+    while (length--) {
+      // Linear search. Performance is inversely proportional to the number of
+      // unique nested structures.
+      if (aStack[length] == a) return bStack[length] == b;
+    }
+    // Add the first object to the stack of traversed objects.
+    aStack.push(a);
+    bStack.push(b);
+    var size = 0, result = true;
+    // Recursively compare objects and arrays.
+    if (className == '[object Array]') {
+      // Compare array lengths to determine if a deep comparison is necessary.
+      size = a.length;
+      result = size == b.length;
+      if (result) {
+        // Deep compare the contents, ignoring non-numeric properties.
+        while (size--) {
+          if (!(result = eq(a[size], b[size], aStack, bStack))) break;
+        }
+      }
+    } else {
+      // Objects with different constructors are not equivalent, but `Object`s
+      // from different frames are.
+      var aCtor = a.constructor, bCtor = b.constructor;
+      if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) &&
+                               _.isFunction(bCtor) && (bCtor instanceof bCtor))) {
+        return false;
+      }
+      // Deep compare objects.
+      for (var key in a) {
+        if (_.has(a, key)) {
+          // Count the expected number of properties.
+          size++;
+          // Deep compare each member.
+          if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
+        }
+      }
+      // Ensure that both objects contain the same number of properties.
+      if (result) {
+        for (key in b) {
+          if (_.has(b, key) && !(size--)) break;
+        }
+        result = !size;
+      }
+    }
+    // Remove the first object from the stack of traversed objects.
+    aStack.pop();
+    bStack.pop();
+    return result;
+  };
+
+  // Perform a deep comparison to check if two objects are equal.
+  _.isEqual = function(a, b) {
+    return eq(a, b, [], []);
+  };
+
+  // Is a given array, string, or object empty?
+  // An "empty" object has no enumerable own-properties.
+  _.isEmpty = function(obj) {
+    if (obj == null) return true;
+    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
+    for (var key in obj) if (_.has(obj, key)) return false;
+    return true;
+  };
+
+  // Is a given value a DOM element?
+  _.isElement = function(obj) {
+    return !!(obj && obj.nodeType === 1);
+  };
+
+  // Is a given value an array?
+  // Delegates to ECMA5's native Array.isArray
+  _.isArray = nativeIsArray || function(obj) {
+    return toString.call(obj) == '[object Array]';
+  };
+
+  // Is a given variable an object?
+  _.isObject = function(obj) {
+    return obj === Object(obj);
+  };
+
+  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.
+  each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
+    _['is' + name] = function(obj) {
+      return toString.call(obj) == '[object ' + name + ']';
+    };
+  });
+
+  // Define a fallback version of the method in browsers (ahem, IE), where
+  // there isn't any inspectable "Arguments" type.
+  if (!_.isArguments(arguments)) {
+    _.isArguments = function(obj) {
+      return !!(obj && _.has(obj, 'callee'));
+    };
+  }
+
+  // Optimize `isFunction` if appropriate.
+  if (typeof (/./) !== 'function') {
+    _.isFunction = function(obj) {
+      return typeof obj === 'function';
+    };
+  }
+
+  // Is a given object a finite number?
+  _.isFinite = function(obj) {
+    return isFinite(obj) && !isNaN(parseFloat(obj));
+  };
+
+  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
+  _.isNaN = function(obj) {
+    return _.isNumber(obj) && obj != +obj;
+  };
+
+  // Is a given value a boolean?
+  _.isBoolean = function(obj) {
+    return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
+  };
+
+  // Is a given value equal to null?
+  _.isNull = function(obj) {
+    return obj === null;
+  };
+
+  // Is a given variable undefined?
+  _.isUndefined = function(obj) {
+    return obj === void 0;
+  };
+
+  // Shortcut function for checking if an object has a given property directly
+  // on itself (in other words, not on a prototype).
+  _.has = function(obj, key) {
+    return hasOwnProperty.call(obj, key);
+  };
+
+  // Utility Functions
+  // -----------------
+
+  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
+  // previous owner. Returns a reference to the Underscore object.
+  _.noConflict = function() {
+    root._ = previousUnderscore;
+    return this;
+  };
+
+  // Keep the identity function around for default iterators.
+  _.identity = function(value) {
+    return value;
+  };
+
+  // Run a function **n** times.
+  _.times = function(n, iterator, context) {
+    var accum = Array(n);
+    for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i);
+    return accum;
+  };
+
+  // Return a random integer between min and max (inclusive).
+  _.random = function(min, max) {
+    if (max == null) {
+      max = min;
+      min = 0;
+    }
+    return min + (0 | Math.random() * (max - min + 1));
+  };
+
+  // List of HTML entities for escaping.
+  var entityMap = {
+    escape: {
+      '&': '&amp;',
+      '<': '&lt;',
+      '>': '&gt;',
+      '"': '&quot;',
+      "'": '&#x27;',
+      '/': '&#x2F;'
+    }
+  };
+  entityMap.unescape = _.invert(entityMap.escape);
+
+  // Regexes containing the keys and values listed immediately above.
+  var entityRegexes = {
+    escape:   new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'),
+    unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g')
+  };
+
+  // Functions for escaping and unescaping strings to/from HTML interpolation.
+  _.each(['escape', 'unescape'], function(method) {
+    _[method] = function(string) {
+      if (string == null) return '';
+      return ('' + string).replace(entityRegexes[method], function(match) {
+        return entityMap[method][match];
+      });
+    };
+  });
+
+  // If the value of the named property is a function then invoke it;
+  // otherwise, return it.
+  _.result = function(object, property) {
+    if (object == null) return null;
+    var value = object[property];
+    return _.isFunction(value) ? value.call(object) : value;
+  };
+
+  // Add your own custom functions to the Underscore object.
+  _.mixin = function(obj) {
+    each(_.functions(obj), function(name){
+      var func = _[name] = obj[name];
+      _.prototype[name] = function() {
+        var args = [this._wrapped];
+        push.apply(args, arguments);
+        return result.call(this, func.apply(_, args));
+      };
+    });
+  };
+
+  // Generate a unique integer id (unique within the entire client session).
+  // Useful for temporary DOM ids.
+  var idCounter = 0;
+  _.uniqueId = function(prefix) {
+    var id = '' + ++idCounter;
+    return prefix ? prefix + id : id;
+  };
+
+  // By default, Underscore uses ERB-style template delimiters, change the
+  // following template settings to use alternative delimiters.
+  _.templateSettings = {
+    evaluate    : /<%([\s\S]+?)%>/g,
+    interpolate : /<%=([\s\S]+?)%>/g,
+    escape      : /<%-([\s\S]+?)%>/g
+  };
+
+  // When customizing `templateSettings`, if you don't want to define an
+  // interpolation, evaluation or escaping regex, we need one that is
+  // guaranteed not to match.
+  var noMatch = /(.)^/;
+
+  // Certain characters need to be escaped so that they can be put into a
+  // string literal.
+  var escapes = {
+    "'":      "'",
+    '\\':     '\\',
+    '\r':     'r',
+    '\n':     'n',
+    '\t':     't',
+    '\u2028': 'u2028',
+    '\u2029': 'u2029'
+  };
+
+  var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
+
+  // JavaScript micro-templating, similar to John Resig's implementation.
+  // Underscore templating handles arbitrary delimiters, preserves whitespace,
+  // and correctly escapes quotes within interpolated code.
+  _.template = function(text, data, settings) {
+    settings = _.defaults({}, settings, _.templateSettings);
+
+    // Combine delimiters into one regular expression via alternation.
+    var matcher = new RegExp([
+      (settings.escape || noMatch).source,
+      (settings.interpolate || noMatch).source,
+      (settings.evaluate || noMatch).source
+    ].join('|') + '|$', 'g');
+
+    // Compile the template source, escaping string literals appropriately.
+    var index = 0;
+    var source = "__p+='";
+    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
+      source += text.slice(index, offset)
+        .replace(escaper, function(match) { return '\\' + escapes[match]; });
+
+      if (escape) {
+        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
+      }
+      if (interpolate) {
+        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
+      }
+      if (evaluate) {
+        source += "';\n" + evaluate + "\n__p+='";
+      }
+      index = offset + match.length;
+      return match;
+    });
+    source += "';\n";
+
+    // If a variable is not specified, place data values in local scope.
+    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
+
+    source = "var __t,__p='',__j=Array.prototype.join," +
+      "print=function(){__p+=__j.call(arguments,'');};\n" +
+      source + "return __p;\n";
+
+    try {
+      var render = new Function(settings.variable || 'obj', '_', source);
+    } catch (e) {
+      e.source = source;
+      throw e;
+    }
+
+    if (data) return render(data, _);
+    var template = function(data) {
+      return render.call(this, data, _);
+    };
+
+    // Provide the compiled function source as a convenience for precompilation.
+    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';
+
+    return template;
+  };
+
+  // Add a "chain" function, which will delegate to the wrapper.
+  _.chain = function(obj) {
+    return _(obj).chain();
+  };
+
+  // OOP
+  // ---------------
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+
+  // Helper function to continue chaining intermediate results.
+  var result = function(obj) {
+    return this._chain ? _(obj).chain() : obj;
+  };
+
+  // Add all of the Underscore functions to the wrapper object.
+  _.mixin(_);
+
+  // Add all mutator Array functions to the wrapper.
+  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      var obj = this._wrapped;
+      method.apply(obj, arguments);
+      if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0];
+      return result.call(this, obj);
+    };
+  });
+
+  // Add all accessor Array functions to the wrapper.
+  each(['concat', 'join', 'slice'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      return result.call(this, method.apply(this._wrapped, arguments));
+    };
+  });
+
+  _.extend(_.prototype, {
+
+    // Start chaining a wrapped Underscore object.
+    chain: function() {
+      this._chain = true;
+      return this;
+    },
+
+    // Extracts the result from a wrapped and chained object.
+    value: function() {
+      return this._wrapped;
+    }
+
+  });
+
+}).call(this);
diff --git a/frontend/js/models/DownloadBasket.js b/frontend/js/models/DownloadBasket.js
new file mode 100644
index 0000000..5de3b4e
--- /dev/null
+++ b/frontend/js/models/DownloadBasket.js
@@ -0,0 +1,75 @@
+var DownloadBasket = Backbone.Collection.extend({
+	model: Song,
+	initialize: function(models, options) {
+		var that = this;
+		this.songList = options.songList;
+		_(this).bindAll("addRemoveBasket", "emptyBasket", "fillBasket", "replace");
+		this.listenTo(options.songList, "change:inBasket", this.addRemoveBasket);
+		this.on("change:inBasket", this.addRemoveBasket);
+		this.songList.localStateFilters.push(function(model, id) {
+			if (that.get(id))
+				model.inBasket = true;
+			return model;
+		});
+		this.listenTo(options.songList, "add", function(model) {
+			that.replace(model);
+			that.trigger("reset", that, {});
+		});
+		var resyncCollection = function(collection) {
+			collection.forEach(that.replace);
+			that.trigger("reset", that, {});
+		};
+		this.listenTo(options.songList, "reset", resyncCollection);
+		this.listenTo(options.songList, "more", resyncCollection);
+	},
+	replace: function(model) {
+		var old = this._byId[model.id];
+		if (!old || old === model)
+			return;
+		this._byId[model.id] = model;
+		for (var key in this._byCid) {
+			if (this._byCid[key].id == model.id)
+				this._byCid[key] = model;
+		}
+		for (var i = 0; i < this.models.length; ++i) {
+			if (this.models[i].id == model.id)
+				this.models[i] = model;
+		}
+		old.off();
+	        model.on("all", this._onModelEvent, this);
+	},
+	addRemoveBasket: function(song, inBasket) {
+		if (inBasket)
+			this.add(song);
+		else
+			this.remove(song);
+	},
+	url: "zip",
+	postParams: function() {
+		var params = [];
+		for (var i = 0; i < this.length; ++i)
+			params.push({ key: "hash", value: this.at(i).id });
+		return params;
+	},
+	emptyBasket: function(success) {
+		var copy = this.models.slice(0);
+		for (var i = 0; i < copy.length; ++i)
+			copy[i].set("inBasket", false);
+		if (success)
+			success();
+	},
+	fillBasket: function(success) {
+		var that = this;
+		var fill = function() {
+			that.songList.forEach(function(song) {
+				song.set("inBasket", true);
+			});
+			if (success)
+				success();
+		};
+		if (this.songList.hasMore())
+			this.songList.more({ limit: 0, success: fill });
+		else
+			fill();
+	}
+});
diff --git a/frontend/js/models/Song.js b/frontend/js/models/Song.js
new file mode 100644
index 0000000..151dce6
--- /dev/null
+++ b/frontend/js/models/Song.js
@@ -0,0 +1,13 @@
+var Song = Backbone.Model.extend({
+	defaults: {
+		"title": "Untitled Track",
+		"artist": "",
+		"album": "",
+		"track": "",
+		"id": "{emptysong}",
+		"mimetype": "audio/mpeg",
+		"length": 0,
+		"playing": false,
+		"inBasket": false
+	}
+});
diff --git a/frontend/js/models/SongList.js b/frontend/js/models/SongList.js
new file mode 100644
index 0000000..f9efe80
--- /dev/null
+++ b/frontend/js/models/SongList.js
@@ -0,0 +1,58 @@
+var SongList = Backbone.Collection.extend({
+	model: Song,
+	url: function() {
+		return "query/" + encodeURIComponent(this.options.query) +
+			"?offset=" + encodeURIComponent(this.offset) +
+			(this.options.limit == 0 ? "" : "&limit=" + this.options.limit);
+	},
+	search: function(options) {
+		this.options = _.extend({ limit: 150, queryType: "all", query: "" }, _.pick(options || {}, "limit", "queryType", "query"));
+		this.offset = 0;
+		this.total = 0;
+		this.fetch({ reset: true });
+	},
+	hasMore: function() {
+		return this.offset < this.total;
+	},
+	more: function(options) {
+		if (!this.hasMore())
+			return;
+		this.options = _.extend(this.options, { limit: 150 }, _.pick(options || {}, "limit"));
+		this.fetch({ silent: false, remove: false, add: true, update: true, success: function(collection, response) {
+			collection.trigger("more", _(collection.models.slice(response.offset)));
+			if (options && options.success)
+				options.success();
+		}});
+	},
+	initialize: function(models, player) {
+		var that = this;
+		this.options = {};
+		this.localStateFilters = [ function(model, id) {
+			if (that.player.playing != null && id == that.player.playing.id)
+				model.playing = true;
+			return model;
+		} ];
+		this.player = player;
+		this.player.setCollection(this);
+		this.on("change:playing", this.switchNowPlaying);
+		this.on("play", this.player.playSong);
+	},
+	switchNowPlaying: function(model) {
+		if (!model.get("playing"))
+			return;
+		this.forEach(function(other) {
+			if (model.id != other.id && other.get("playing"))
+				other.set("playing", false);
+		});
+	},
+	parse: function(response) {
+		this.total = response.total;
+		this.offset = response.offset + response.songs.length;
+		var that = this;
+		return _.map(response.songs, function(song) {
+			for (var i = 0; i < that.localStateFilters.length; ++i)
+				song = that.localStateFilters[i](song, song.id);
+			return song;
+		});
+	}
+});
diff --git a/frontend/js/views/DownloadSelector.js b/frontend/js/views/DownloadSelector.js
new file mode 100644
index 0000000..ff2c457
--- /dev/null
+++ b/frontend/js/views/DownloadSelector.js
@@ -0,0 +1,115 @@
+var DownloadSelector = Backbone.View.extend({
+	initialize: function() {
+		var that = this;
+		_(this).bindAll("add", "remove", "render", "inhibitedRender");
+		this.inhibitRendering = false;
+		this.$table = this.$el.find("table");
+		this.$tableContainer = this.$el.find("#basket-container");
+		this.$buttons = this.$el.find(".btn-group");
+		this.$basketCount = this.$el.find(".basket-count");
+		this.$basketCaret = this.$el.find(".icon-caret-down");
+		var animateHide = function() {
+			that.$tableContainer.css("overflow", "hidden").animate({ "max-height": "0", "height": "0" }, { complete: function() {
+				that.$el.removeClass("basket-shown");
+				$(this).css("overflow", "auto").css("height", "auto");
+			}});
+		};
+		var animateShow = function() {
+			that.$el.addClass("basket-shown");
+			that.$tableContainer.css("overflow", "hidden").animate({ "scroll-top": "0", "max-height": "300px" }, { complete: function() {
+				$(this).css("overflow", "auto");
+			}});
+		};
+		this.$el.find(".show-basket").click(function() {
+			if (that.collection.length) {
+				if (that.$el.hasClass("basket-shown"))
+					animateHide();
+				else
+					animateShow();
+			}
+		});
+		var mouseIn = false;
+		this.$el.find("#basket-container, .btn-group").mouseenter(function() {
+			mouseIn = true;
+		}).mouseleave(function() {
+			mouseIn = false;
+		});
+		$(document).mousedown(function() {
+			if (!mouseIn && that.$el.hasClass("basket-shown"))
+				animateHide();
+		});
+		this.$el.find(".empty-basket").click(this.inhibitedRender(this.collection.emptyBasket));
+		this.$el.find(".fill-basket").click(this.inhibitedRender(this.collection.fillBasket));
+		this.$el.find(".download-basket").click(function() {
+			if (!that.collection.length)
+				return;
+			var form = $("<form>").attr("method", "POST").attr("action", that.collection.url).attr("target", "_blank").css("display", "none");
+			var params = that.collection.postParams();
+			for (var i = 0; i < params.length; ++i)
+				form.append($("<input>").attr("type", "hidden").attr("name", params[i].key).attr("value", params[i].value));
+			$(document.body).append(form);
+			form[0].submit();
+			form.remove();
+			that.inhibitedRender(that.collection.emptyBasket)();
+		});
+		this.songRows = {};
+		this.listenTo(this.collection, "add", this.add);
+		this.listenTo(this.collection, "remove", this.remove);
+		this.listenTo(this.collection, "reset", this.reset);
+		this.collection.forEach(this.add);
+		this.render();
+	},
+	reset: function() {
+		var that = this;
+		var newSongRows = {}
+		this.collection.forEach(function(song) {
+			if (song.id in that.songRows && song === that.songRows[song.id].model)
+				newSongRows[song.id] = that.songRows[song.id];
+			else
+				newSongRows[song.id] = new SongRow({ model: song, download: true });
+		});
+		this.songRows = newSongRows;
+		this.render();
+	},
+	add: function(song) {
+		var row = new SongRow({ model: song, download: true });
+		this.songRows[song.id] = row;
+		this.render();
+	},
+	remove: function(song) {
+		var row = this.songRows[song.id];
+		delete this.songRows[song.id];
+		this.render();
+	},
+	render: function() {
+		if (this.inhibitRendering)
+			return;
+		var that = this;
+		this.$table.empty();
+		this.collection.each(function(song) {
+			that.$table.append(that.songRows[song.id].render().el);
+		});
+		this.$basketCount.text(this.collection.length);
+		if (this.collection.length) {
+			this.$basketCaret.show();
+			this.$basketCount.addClass("badge-info");
+		} else {
+			this.$tableContainer.css("max-height", "0");
+			this.$el.removeClass("basket-shown");
+			this.$basketCount.removeClass("badge-info");
+			this.$basketCaret.hide();
+		}
+		this.$tableContainer.width(this.$buttons.width());
+		return this;
+	},
+	inhibitedRender: function(bulk) {
+		var that = this;
+		return function() {
+			that.inhibitRendering = true;
+			bulk(function() {
+				that.inhibitRendering = false;
+				that.render();
+			});
+		};
+	}
+});
diff --git a/frontend/js/views/SongRow.js b/frontend/js/views/SongRow.js
new file mode 100644
index 0000000..be1ccc6
--- /dev/null
+++ b/frontend/js/views/SongRow.js
@@ -0,0 +1,34 @@
+var SongRow = Backbone.View.extend({
+	tagName: "tr",
+	initialize: function(options) {
+		this.download = !!options.download;
+		this.listenTo(this.model, "change", this.render);
+	},
+	render: function() {
+		//XXX: Use proper templating.
+		var model = this.model;
+		this.$el.empty().append($("<td>").text(this.model.get("track")))
+				.append($("<td>").text(this.model.get("title")))
+				.append($("<td>").text(this.model.get("album")))
+				.append($("<td>").text(this.model.get("artist")))
+				.append($("<td>").append($("<a>")
+					.append($("<i>").addClass(this.download ? "text-error icon-remove" : "icon-download-alt"))
+					.addClass(this.download ? "remove" : "btn btn-mini")
+					.addClass(model.get("inBasket") && !this.download ? "active btn-info" : "")
+					.click(function() {
+						model.set("inBasket", !model.get("inBasket"));
+						return false;
+					})));
+		var that = this.model;
+		if (!this.download) {
+			this.$el.click(function() {
+				that.trigger("play", that);
+			});
+		}
+		if (this.model.get("playing"))
+			this.$el.addClass("now-playing");
+		else
+			this.$el.removeClass("now-playing");
+		return this;
+	}
+});
diff --git a/frontend/js/views/SongTable.js b/frontend/js/views/SongTable.js
new file mode 100644
index 0000000..82f5c03
--- /dev/null
+++ b/frontend/js/views/SongTable.js
@@ -0,0 +1,61 @@
+var SongTable = Backbone.View.extend({
+	initialize: function() {
+		var that = this;
+		_(this).bindAll("add", "remove", "render", "renderMore");
+
+		this.$songlistContainer = this.$el.find("#songlist-container");
+		this.$tbody = this.$songlistContainer.find("tbody");
+		this.$songlistContainer.scroll(function() {
+			if (that.collection.hasMore() && this.scrollHeight - (this.scrollTop + this.clientHeight) < 1500)
+				that.collection.more();
+		});
+		this.$searchProgress = this.$el.find("#search-progress");
+		this.collection.on("request", function() {
+			that.$searchProgress.removeClass().addClass("icon-spinner").addClass("icon-spin");
+		}).on("sync", function() {
+			that.$searchProgress.removeClass().addClass("icon-search");
+		});
+		this.$query = this.$el.find("#query");
+		var doSearch = function() {
+			var val = that.$query.val();
+			if (val != that.collection.options.query)
+				that.collection.search({ query: val });
+		};
+		var latestSearchTimer = null;
+		this.$query.change(doSearch).keyup(function() {
+			if (latestSearchTimer != null)
+				clearTimeout(latestSearchTimer);
+			latestSearchTimer = setTimeout(doSearch, 350);
+		});
+
+		this.listenTo(this.collection, "add", this.add);
+		this.listenTo(this.collection, "remove", this.remove);
+		this.listenTo(this.collection, "reset", this.render);
+		this.listenTo(this.collection, "more", this.renderMore);
+		this.render();
+	},
+	add: function(song) {
+		var row = new SongRow({ model: song });
+		this.songRows[song.id] = row;
+	},
+	remove: function(song) {
+		var row = this.songRows[song.id];
+		delete this.songRows[song.id];
+	},
+	appendSongs: function(songs) {
+		var that = this;
+		songs.each(function(song) {
+			that.$tbody.append(that.songRows[song.id].render().el);
+		});
+	},
+	render: function() {
+		this.$tbody.empty().scrollTop(0);
+		this.songRows = {};
+		this.collection.each(this.add);
+		this.appendSongs(this.collection);
+		return this;
+	},
+	renderMore: function(more) {
+		this.appendSongs(more);
+	}
+});
diff --git a/server.cfg b/server.cfg
new file mode 100644
index 0000000..8d2572d
--- /dev/null
+++ b/server.cfg
@@ -0,0 +1,7 @@
+SERVER = music.zx2c4.com
+SERVER_UPLOAD_PATH = zmusic-ng
+SERVER_DEPLOY_PATH = /var/www/uwsgi/zmusic
+SERVER_COLLECTION_PATH = /mnt/music
+LOCAL_COLLECTION_PATH = /home/zx2c4/Music
+ADMIN_USERNAME = msadmin
+ADMIN_PASSWORD = 2manyservers