$(document).ready(function(){
	var Playlist = function(instance, playlist, options) {
		var self = this;

		this.instance = instance; // String: To associate specific HTML with this playlist
		this.playlist = playlist; // Array of Objects: The playlist
		this.options = options; // Object: The jPlayer constructor options for this playlist

		this.current = 0;

		this.cssId = {
			jPlayer: "jquery_jplayer_",
			interface: "jp_interface_",
			playlist: "jp_playlist_"
		};
		this.cssSelector = {};

		$.each(this.cssId, function(entity, id) {
			self.cssSelector[entity] = "#" + id + self.instance;
		});

		if(!this.options.cssSelectorAncestor) {
			this.options.cssSelectorAncestor = this.cssSelector.interface;
		}

		$(this.cssSelector.jPlayer).jPlayer(this.options);

		$(this.cssSelector.interface + " .jp-previous").click(function() {
			self.playlistPrev();
			$(this).blur();
			return false;
		});

		$(this.cssSelector.interface + " .jp-next").click(function() {
			self.playlistNext();
			$(this).blur();
			return false;
		});
	};

	Playlist.prototype = {
		displayPlaylist: function() {
			var self = this;
			$(this.cssSelector.playlist + " ul").empty();
			for (i=0; i < this.playlist.length; i++) {
				var listItem = (i === this.playlist.length-1) ? "<li class='jp-playlist-last'>" : "<li>";
				listItem += "<a href='#' id='" + this.cssId.playlist + this.instance + "_item_" + i +"' tabindex='1'>"+ this.playlist[i].name +"</a>";

				// Create links to free media
				if(this.playlist[i].free) {
					var first = true;
					listItem += "<div class='jp-free-media'>(";
					$.each(this.playlist[i], function(property,value) {
						if($.jPlayer.prototype.format[property]) { // Check property is a media format.
							if(first) {
								first = false;
							} else {
								listItem += " | ";
							}
							listItem += "<a id='" + self.cssId.playlist + self.instance + "_item_" + i + "_" + property + "' href='" + value + "' tabindex='1'>" + property + "</a>";
						}
					});
					listItem += ")</span>";
				}

				listItem += "</li>";

				// Associate playlist items with their media
				$(this.cssSelector.playlist + " ul").append(listItem);
				$(this.cssSelector.playlist + "_item_" + i).data("index", i).click(function() {
					var index = $(this).data("index");
					if(self.current !== index) {
						self.playlistChange(index);
					} else {
						$(self.cssSelector.jPlayer).jPlayer("play");
					}
					$(this).blur();
					return false;
				});

				// Disable free media links to force access via right click
				if(this.playlist[i].free) {
					$.each(this.playlist[i], function(property,value) {
						if($.jPlayer.prototype.format[property]) { // Check property is a media format.
							$(self.cssSelector.playlist + "_item_" + i + "_" + property).data("index", i).click(function() {
								var index = $(this).data("index");
								$(self.cssSelector.playlist + "_item_" + index).click();
								$(this).blur();
								return false;
							});
						}
					});
				}
			}
		},
		playlistInit: function(autoplay) {
			if(autoplay) {
				this.playlistChange(this.current);
			} else {
				this.playlistConfig(this.current);
			}
		},
		playlistConfig: function(index) {
			$(this.cssSelector.playlist + "_item_" + this.current).removeClass("jp-playlist-current").parent().removeClass("jp-playlist-current");
			$(this.cssSelector.playlist + "_item_" + index).addClass("jp-playlist-current").parent().addClass("jp-playlist-current");
			this.current = index;
			$(this.cssSelector.jPlayer).jPlayer("setMedia", this.playlist[this.current]);
		},
		playlistChange: function(index) {
			this.playlistConfig(index);
			$(this.cssSelector.jPlayer).jPlayer("play");
		},
		playlistNext: function() {
			var index = (this.current + 1 < this.playlist.length) ? this.current + 1 : 0;
			this.playlistChange(index);
		},
		playlistPrev: function() {
			var index = (this.current - 1 >= 0) ? this.current - 1 : this.playlist.length - 1;
			this.playlistChange(index);
		}
	};

	var audioPlaylist2010 = new Playlist("2010", [
		{
			name:"Chatroulette", mp3:"/multimedia/audio/2010/Chatroulette.mp3",
		},
		{
			name:"Collage Satellite", mp3:"/multimedia/audio/2010/Collage Satellite.mp3",
		},
		{
			name:"Collage WM-Songs", mp3:"/multimedia/audio/2010/Collage WM-Songs.mp3",
		},
		{
			name:"Cybermobbing 01", mp3:"/multimedia/audio/2010/Cybermobbing 01.mp3",
		},
		{
			name:"Cybermobbing 02", mp3:"/multimedia/audio/2010/Cybermobbing 02.mp3",
		},
		{
			name:"Ölpest im Golf von Mexiko 01", mp3:"/multimedia/audio/2010/Oelpest im Golf von Mexiko 01.mp3",
		},
		{
			name:"Ölpest im Golf von Mexiko 02", mp3:"/multimedia/audio/2010/Oelpest im Golf von Mexiko 02.mp3",
		},
		{
			name:"Schulradio BBW Potsdam", mp3:"/multimedia/audio/2010/Schulradio BBW Potsdam.mp3",
		},
		{
			name:"Teilnehmer beim SchoolRadioDay", mp3:"/multimedia/audio/2010/Teilnehmer beim SchoolRadioDay.mp3",
		},
		{
			name:"Umfrage ÖPNV", mp3:"/multimedia/audio/2010/Umfrage OEPNV.mp3",
		},
		{
			name:"Umfrage zu Manuel Neuer", mp3:"/multimedia/audio/2010/Umfrage zu Manuel Neuer.mp3",
		},
		{
			name:"Umfrage zum SchoolRadioDay 01", mp3:"/multimedia/audio/2010/Umfrage zum SchoolRadioDay 01.mp3",
		},
		{
			name:"Umfrage zum SchoolRadioDay 02", mp3:"/multimedia/audio/2010/Umfrage zum SchoolRadioDay 02.mp3",
		},
		{
			name:"Was macht Schulradio aus", mp3:"/multimedia/audio/2010/Was macht Schulradio aus.mp3",
		}		

	], {
		ready: function() {
			audioPlaylist2010.displayPlaylist();
			audioPlaylist2010.playlistInit(false); // Parameter is a boolean for autoplay.
		},
		ended: function() {
			audioPlaylist2010.playlistNext();
		},
		play: function() {
			$(this).jPlayer("pauseOthers");
		},
		swfPath: "/res/",
		supplied: "mp3"
	});
	
	var audioPlaylist2011 = new Playlist("2011", [
		{
			name:"SchoolRadioDay 2011", mp3:"/multimedia/audio/2011/SchoolRadioDay 2011.mp3",
		},
		{
			name:"Umfrage Sommer", mp3:"/multimedia/audio/2011/Umfrage Sommer.mp3",
		},
		{
			name:"Umfrage Traumziele", mp3:"/multimedia/audio/2011/Umfrage Traumziele.mp3",
		},
		{
			name:"Umfrage Festivals", mp3:"/multimedia/audio/2011/Umfrage Festivals.mp3",
		},
		{
			name:"Umfrage Frauenfu&szlig;ball", mp3:"/multimedia/audio/2011/Umfrage Frauenfussball.mp3",
		},
		{
			name:"Umfrage Internetnutzung", mp3:"/multimedia/audio/2011/Umfrage Internetnutzung.mp3",
		},
		{
			name:"Umfrage Festivalerlebnisse", mp3:"/multimedia/audio/2011/Umfrage Festivalerlebnis.mp3",
		}	

	], {
		ready: function() {
			audioPlaylist2011.displayPlaylist();
			audioPlaylist2011.playlistInit(false); // Parameter is a boolean for autoplay.
		},
		ended: function() {
			audioPlaylist2011.playlistNext();
		},
		play: function() {
			$(this).jPlayer("pauseOthers");
		},
		swfPath: "/res/",
		supplied: "mp3"
	});	

});