/*
 * 	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($) {

	$.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: 			400,
			auto:			false,
			ease:           'swing',
			pause:			5000,
			continuous:		false,
			numeric: 		false,
			numericId: 		'controls',
			numThumb: 		5,
			hoverPause:		true,
			nextIdTmp: 		'nextBtnTemp',	
			overLayID:		'overlayID',		
			slideTextID:	'slidertextID'
		}; 
		
		var options = $.extend(defaults, options);  
				
		this.each(function() {  
			var obj = $(this); 
			// Fix for nested list items
            var ul = obj.children("ul");
            var li = ul.children("li");
			
			var version = 0;
			if(navigator.appVersion.indexOf("MSIE")!=-1){
				temp=navigator.appVersion.split("MSIE")
				version = parseFloat(temp[1]);
			}
			if(version==6) {
				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');
			}
			else {
				var s = li.length;
				var w = obj.width(); 
				var h = obj.height();
				var t = 0;
				var ts = s-1;
				
				obj.css("overflow","hidden");
				
				li.each(function() {
				   if(options.vertical) $(this).height(h);
					else $(this).width(w);
				});
	
				// Float items to the left
				li.css('float', 'left');
	
				// Set width/height of ul
				if(options.vertical) ul.height(s*w);
				else ul.width(s*h);
				
				if(options.continuous)
				{
					if(options.vertical)
					{
						ul.prepend(li.filter(":last-child").clone().css("margin-top","-"+ h +"px"));
						ul.append(li.filter(":nth-child(2)").clone());
						ul.height((s+1)*h);
					} else {
						ul.prepend(li.filter(":last-child").clone().css("margin-left","-"+ w +"px"));
						ul.append(li.filter(":nth-child(2)").clone());
						ul.width((s+1)*w);
					}
				};
			}
			
			if(options.controlsShow){
				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);
			};
			
			if(options.numeric){
				for(var i=1;i<=options.numThumb;i++){
					$('#'+options.numericId+i).click(function(){
						animate($(this).attr('rel'),true);
						}, function(){
						if(options.continuous){
							timeout = setTimeout(function(){
								animate("next",false);
							},options.pause);
						}
					});
					$('#'+options.numericId+i).hover(function(){
							clearTimeout(timeout);
						}, function(){
						if(options.continuous){
							timeout = setTimeout(function(){
								animate("next",false);
							},options.pause);
						}
					});
				}
			}
			$("a","#"+options.nextId).click(function(){		
				animate("next",true);
			});
			$("a","#"+options.prevId).click(function(){		
				animate("prev",true);				
			});	
			$("a","#"+options.firstId).click(function(){		
				animate("first",true);
			});				
			$("a","#"+options.lastId).click(function(){		
				animate("last",true);				
			});		
			
			function setCurrent(i){
				i = parseInt(i)+1;
				$("a", "#" + options.numericId).removeClass("selected");
				$("a#" + options.numericId + i).addClass("selected");
				/*Begin - overlay and text effect for this project*/
				displayText(i);
				/*End - overlay and text effect for this project*/
			};
			/*Begin - overlay and text effect for this project*/
			function initDisplayText() {
				$("." + options.overLayID).animate({opacity: 0.0, bottom:0},50);
				$("." + options.slideTextID).animate({opacity: 0.0, bottom:9},50);
			}
			function displayText(i) {
				$("#" + options.overLayID + i).animate({opacity: 0.5, bottom:0}, 100, function () {
					$("#" + options.slideTextID + i).animate({opacity: 1.0, bottom:9}, 150);	
				});
			}
			/*End - overlay and text effect for this project*/
			function adjust(){
				if(t>ts) t=0;
                if(t<0) t=ts;
                if(!options.vertical) {
                    ul.css("margin-left",(t*w*-1));
                } else {
                    ul.css("margin-top",(t*h*-1));
                }
                clickable = true;
				if(options.numeric) setCurrent(t);
			};
			
			if(options.hoverPause){
				$('#slider1').hover(function(){
					clearTimeout(timeout);
					}, function(){
					if(options.continuous){
						timeout = setTimeout(function(){
							animate("next",false);
						},options.pause);
					}
				});
			};
			
			function animate(dir,clicked){
				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;
						var vt = t;
						break; 
					case "first":
						t = 0;
						break; 
					case "last":
						t = ts;
						break; 
					default:
						t = parseInt(dir);
						break; 
				};
				var diff = Math.abs(ot-t);
				var speed = diff*options.speed;						
				if(!options.vertical) {
					p = (t*w*-1);
					ul.animate(
						{ marginLeft: p }, 
						{
							queue:false,
							duration:speed,
							easing:options.ease,
							complete:adjust
						}
					);				
				} else {
					p = (t*h*-1);
					/*Begin - overlay and text effect for this project*/
					if(options.numeric){
						var vt = ot + 1;
						$("#" + options.slideTextID + vt).animate({opacity:0.0, bottom:9}, 150, function () {
							$("#" + options.overLayID + vt).animate({opacity:0.0, bottom:0}, 100, function() {
								ul.animate(
									{ marginTop: p }, 
									{
										queue:false,
										duration:speed,
										easing:options.ease,
										complete:adjust
									}
								);
							});
						});
					}
					else {
						ul.animate(
							{ marginTop: p }, 
							{
								queue:false,
								duration:speed,
								easing:options.ease,
								complete:adjust
							}
						);
					}
					/*End - overlay and text effect for this project*/
				};
				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();
					};
					//begin - only include for this project
					if(t==2)
						$("a","#"+options.nextIdTmp).show();
					else
						$("a","#"+options.nextIdTmp).hide();
					//end - only include for this project
				};				
				
				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){;
				initDisplayText();
				timeout = setTimeout(function(){
					animate("next",false);
				},options.pause);
			};		
			
			if(options.numeric) setCurrent(0);
			
			if(!options.continuous && options.controlsFade){					
				$("a","#"+options.prevId).hide();
				$("a","#"+options.firstId).hide();
				$("a","#"+options.nextIdTmp).hide();
			};				
			
		});
	  
	};

})(jQuery);