/*
 * 	Easy Slider 1.5 - jQuery plugin
 *	written by Alen Grakalic
 *	http://cssglobe.com/post/4004/easy-slider-15-the-easiest-jquery-plugin-for-sliding
 *
 *	Copyright (c) 2009 Alen Grakalic (http://cssglobe.com)
 *	Dual licensed under the MIT (MIT-LICENSE.txt)
 *	and GPL (GPL-LICENSE.txt) licenses.
 *
 *	Built for jQuery library
 *	http://jquery.com
 *
 */

 /**************** This file as been modified for our site, so careful if you want to replace it with a newer version *********************/

/*
 *	markup example for $("#slider").easySlider();
 *
 * 	<div id="slider">
 *		<ul>
 *			<li><img src="images/01.jpg" alt="" /></li>
 *			<li><img src="images/02.jpg" alt="" /></li>
 *			<li><img src="images/03.jpg" alt="" /></li>
 *			<li><img src="images/04.jpg" alt="" /></li>
 *			<li><img src="images/05.jpg" alt="" /></li>
 *		</ul>
 *	</div>
 *
 */

(function($) {

	$.fn.easySlider = function(options){

		// default configuration properties
		var defaults = {
			prevId: 		'prevBtn',
			prevText: 		'Previous',
			nextId: 		'nextBtn',
			nextText: 		'Next',
			controlsShow:	true,
			controlsBefore:	'',
			controlsAfter:	'',
			controlsFade:	true,
			firstId: 		'firstBtn',
			firstText: 		'First',
			firstShow:		false,
			lastId: 		'lastBtn',
			lastText: 		'Last',
			lastShow:		false,
			vertical:		false,
			speed: 			800,
			auto:			false,
			pause:			2000,
			continuous:		false,
			numerical:		false, 	// Added by Gen: Set to true to get a numeric pagination instead of next/previous
			start:			'', 	// Added by Gen: Enter a value to make the slider start at a specific slide
			pagination:		false 	// Added by Gen: If you want to display the page number (Ex: 13 / 30), just created a element with the id 'sliderPagination' and it will be updated
		};

		var options = $.extend(defaults, options);

		this.each(function() {
			var obj = $(this);
			var s = $("li", obj).length;
			var w = $("li", obj).width();
			var h = $("li", obj).height();
			var num = $("li", obj).size(); // Gen: Count the number of slides
			obj.width(w);
			obj.height(h);
			obj.css("overflow","hidden");
			var ts = s-1;
			var t = 0;
			$("ul", obj).css('width',s*w);
			if(!options.vertical) $("li", obj).css('float','left');

			// Added by Gen: Make the slider start at a specific slide
			if(options.start){
				t = options.start-1;
				if(options.vertical){
					var unit = h;
					var marginValue = "marginTop";
				} else {
					var unit = w;
					var marginValue = "marginLeft";
				}
				p = (t*unit*-1);
				$("ul",obj).css(marginValue, p);
			}

			if(options.controlsShow){

				if(options.numerical){
					/*************Added by Gen: Create a numeric pagination ****************************/
					var html = "<div class='nav_numbers clearfix'>";
					for(i=1;i<=num;i++)
					{
						html += ' <span id="slide-button-'+ i +'" class="slide-buttons"><a href=\"javascript:void(0);\">'+ i +'</a></span>';
					}
					html += "</div>";
					$(obj).before(html);
				} else {
					/************** ORIGINAL CODE ***********************/
					var html = options.controlsBefore;
					if(options.firstShow) html += '<span id="'+ options.firstId +'"><a href=\"javascript:void(0);\">'+ options.firstText +'</a></span>';
					html += ' <span id="'+ options.prevId +'"><a href=\"javascript:void(0);\">'+ options.prevText +'</a></span>';
					html += ' <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\">'+ options.nextText +'</a></span>';
					if(options.lastShow) html += ' <span id="'+ options.lastId +'"><a href=\"javascript:void(0);\">'+ options.lastText +'</a></span>';
					html += options.controlsAfter;
					$(obj).after(html);
				}

			};

			$("#slide-button-1").addClass("current").addClass("link_bg_color"); // check : set the first button text color

			$("a","#"+options.nextId).click(function(){
				animate("next",true, "");
			});


			$("#slider li").click(function(){ // Added by Gen: Makes the slide clickable to go Next
				var slideNum = t+1;
				animate("specific",true, slideNum);
			});


			$("a","#"+options.prevId).click(function(){
				animate("prev",true, "");
			});
			$("a","#"+options.firstId).click(function(){
				animate("first",true, "");
			});
			$("a","#"+options.lastId).click(function(){
				animate("last",true, "");
			});

			$(".slide-buttons").click(function(){ // Added by Gen : Go to the slide specified in the button id (for numeric or thumbnails menu)
				var slideNum = $(this).attr("id").split("-")[2];
				animate("specific",true, slideNum);
			});

			function animate(dir,clicked, value){
				var ot = t;
				switch(dir){
					case "next":
						t = (ot>=ts) ? (options.continuous ? 0 : ts) : t+1;
						break;
					case "prev":
						t = (t<=0) ? (options.continuous ? ts : 0) : t-1;
						break;
					case "first":
						t = 0;
						break;
					case "last":
						t = ts;
						break;
					case "specific": // Added by Gen : Choose a specific slide
						t = value-1;
						break;
					default:
						break;
				};

				if(options.pagination){ // Added by Gen : Update the element with the id 'sliderPagination' to put the current page number (the element has to be added in the html)
					$("#sliderPagination").html(t+1);
				}

				var diff = Math.abs(ot-t);
				var speed = diff*options.speed;
				if(!options.vertical) {
					p = (t*w*-1);
					/*$("ul",obj).animate(
						{ marginLeft: p },
						speed
					);*/

					$("ul",obj).fadeOut('slow', function(){
						$("ul",obj).css('marginLeft', p).fadeIn();
					});

				} else {
					p = (t*h*-1);

					/*$("ul",obj).animate(
						{ marginTop: p },
						speed
					);*/
					alert('hello?');

					$("ul",obj).fadeOut().css('marginTop', p).fadeIn();

				};

				// check: Added by Vahid to toggle text color
				$(".slide-buttons").removeClass("selected");
                $("#slide-button-"+(t+1)).addClass("selected");

				if(!options.continuous && options.controlsFade){
					if(t==ts){
						$("a","#"+options.nextId).hide();
						$("a","#"+options.lastId).hide();
					} else {
						$("a","#"+options.nextId).show();
						$("a","#"+options.lastId).show();
					};
					if(t==0){
						$("a","#"+options.prevId).hide();
						$("a","#"+options.firstId).hide();
					} else {
						$("a","#"+options.prevId).show();
						$("a","#"+options.firstId).show();
					};
				};

				if(clicked) clearTimeout(timeout);
				if(options.auto && dir=="next" && !clicked){;
					timeout = setTimeout(function(){
						animate("next",false);
					},diff*options.speed+options.pause);
				};

			};
			// init
			var timeout;
			if(options.auto){;
				timeout = setTimeout(function(){
					animate("next",false);
				},options.pause);
			};

			if(!options.continuous && options.controlsFade){
				$("a","#"+options.prevId).hide();
				$("a","#"+options.firstId).hide();
			};

		});

	};

})(jQuery);