/*
 * FeatureList - simple and easy creation of an interactive "Featured Items" widget
 * Examples and documentation at: http://jqueryglobe.com/article/feature-list
 * Version: 1.0.0 (01/09/2009)
 * Copyright (c) 2009 jQueryGlobe
 * Licensed under the MIT License: http://en.wikipedia.org/wiki/MIT_License
 * Requires: jQuery v1.3+
*/
;(function($) {
	$.fn.featureList = function(options) {
		var tabs	= $(this);
		var output	= $(options.output);

		new jQuery.featureList(tabs, output, options);

		return this;	
	};

	$.featureList = function(tabs, output, options) {
		function slide(nr) {
			if (core.featureList){
				if (typeof nr == "undefined") {
					nr = visible_item + 1;
					nr = nr >= total_items ? 0 : nr;
				}
				$('#nav #tabs li a.current span img').attr('src','img/home/video_o.gif');
				tabs.removeClass('current').filter(":eq(" + nr + ")").addClass('current');
				$('#nav #tabs li a.current span img').attr('src','img/home/video_w.gif');
	
				output.stop(true, true).filter(":visible").fadeOut();
				output.filter(":eq(" + nr + ")").fadeIn(function() {
					visible_item = nr;	
				});
			}
		}

		var options			= options || {}; 
		var total_items		= tabs.length;
		var visible_item	= options.start_item || 0;

		options.pause_on_hover		= options.pause_on_hover		|| true;
		options.transition_interval	= options.transition_interval	|| 0;
		output.hide().eq( visible_item ).show();
		tabs.eq( visible_item ).addClass('current');

		tabs.click(function() {
			if ($(this).hasClass('current')) {
				return false;	
			}
			
			core.featureList = true;
			core.nowPlaying = false;
				
			if (index.introFlag == true) {			
				
				if (index.animationHideFlag != true) { 
					index.startLessonAnimation();
				}
			};
			
			$f("slideCVideo").unload();
			$f("slideDVideo").unload();
			slide( tabs.index( this) );
			
			if (index.introFlag == false) {	
				core.featureList = false;
				core.nowPlaying = true;
			}
		});

		if (options.transition_interval > 0) {
			var timer = setInterval(function () {
				slide();
			}, options.transition_interval);

			if (options.pause_on_hover) {
				tabs.mouseenter(function() {
					clearInterval( timer );

				}).mouseleave(function() {
					clearInterval( timer );
					timer = setInterval(function () {
						slide();
					}, options.transition_interval);
				});
			}
		}
	};
})(jQuery);