/*
 * 	Edited version of 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
 * 
 *
 */
 
/*
 *	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 animateActiveElement(activeElement){
	var elements = $("#"+options.itemListId).children();
	for(i=0;i<elements.length;i++){
		var  elid = elements[i];
		var idarr = elid.id.split("_");
		var elementPos = idarr[1];
		if((activeElement+1) == elements.length)
			activeElement = -1;
//alert("elid: "+$(elid).attr("id")+" elementPos: "+elementPos+" activeElement+1: "+(activeElement+1));
		if(elementPos == (activeElement+1))
			$(elid).fadeTo("fast",1);
		else
			$(elid).fadeTo("fast",.7);

	}

	
}
(function($) {

	$.fn.easySlider = function(options){
	  	var html = '<div class="listItem" id="item_0">Fist list item</div>';
		// 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:			3000,
			continuous:		false,

/*****		NEW */
			autoDirection:	"next",
			itemListId:		'itemList',
			thumbHTML:		html,
			liItemClass:	'listItem',
			liItemIdPrefix:	"item",
			idSeparator:	"_"
/*****			*/
			
		}; 
		
		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(); 
			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');
			if(options.controlsShow){
				var html = options.controlsBefore;
				html = options.thumbHTML;
				var liItemClass = options.liItemClass;
				var liItemClass = options.liItemClass;
				$(obj).append(html);										

			};

			var firstChild = $("li:first-child").parent($("#"+options.itemListId))
			firstChild.fadeTo("fast",1);
			$("."+liItemClass).click( function(){ animateByClicked($(this)) });
			animateActiveElement(-1);			
			
			function animateByClicked(clickedObject){
				var objid = $(clickedObject).attr("id");
				var idarr = objid.split(options.idSeparator);
				var clickedItemPosition = idarr[1]; 

				/** To not be able to click on active element **/							
				if(clickedItemPosition == t) return;
				
				var activeImagePosition = t;
				var positionDiff = clickedItemPosition - activeImagePosition;
				var ot = activeImagePosition;	
				animateActiveElement(clickedItemPosition-1);

				t = t+(positionDiff);
		
				var diff = Math.abs(activeImagePosition-t);
				var speed = options.speed / (Math.abs(positionDiff)/2);
				var p = 0;
				if(!options.vertical) {
					p = (t*w*-1);
//					$("ul",obj).animate({ marginLeft: p },speed);
lisa =$("ul:first-child");
//alert(options.itemListId);				
					$("ul:first-child").animate({ marginLeft: p },speed);				
				} else {
					p = (t*h*-1);
					$("ul",obj).animate({ marginTop: p }, speed);					
				}
				clearTimeout(timeout)
				if(options.auto){;
					timeout = setTimeout(function(){
						animateAuto(1);
					},diff*options.speed+options.pause);
				};
				
			};
			
			function animateActiveElement(activeElement){
				var elements = $("#"+options.itemListId).children();
				for(i=0;i<elements.length;i++){
					var  elid = elements[i];
					var idarr = elid.id.split("_");
					var elementPos = idarr[1];
					if((activeElement+1) == elements.length)
						activeElement = -1;
//alert("elid: "+$(elid).attr("id")+" elementPos: "+elementPos+" activeElement+1: "+(activeElement+1));
					if(elementPos == (activeElement+1))
						$(elid).fadeTo("fast",1);
					else
						$(elid).fadeTo("fast",.5);

				}
	
				
			}

			function animateAuto(clickedObject){

				var ot = t;
				var activeElement = t;
			
				animateActiveElement(activeElement);
				var dir = dir = options.autoDirection;
				if(t>=ts)  dir = "last";
				switch(dir){
					case "next":
						t = t+1;						
						break; 
					case "prev":
						t = t-1;
						break; 
					case "first":
						t = 0;
						break; 
					case "last":
						t = 0;
						break; 
					default:
						break; 
				};	
				var diff = Math.abs(ot-t);
				var speed = diff*options.speed;						
				var speed = options.speed / (Math.abs(diff)/2);
				if(!options.vertical) {
					p = (t*w*-1);
					$("ul",obj).animate(
						{ marginLeft: p }, 
						speed
					);				
				} else {
					p = (t*h*-1);
					$("ul",obj).animate(
						{ marginTop: p }, 
						speed
					);					
				};
				
				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(options.auto){;
					timeout = setTimeout(function(){
						animateAuto();
					},diff*options.speed+options.pause);
				};
			};

			// init
			var timeout;
			if(options.auto){;
				timeout = setTimeout(function(){
					animateAuto();
				},options.pause);
			};		
			if(!options.continuous && options.controlsFade){					
				$("a","#"+options.prevId).hide();
				$("a","#"+options.firstId).hide();				
			};				
			
		});
	  
	};

})(jQuery);