/*
 * 	Easy Slider 1.7 - 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: 			500,
			auto:			false,
			pause:			2000,
			continuous:		false, 
			numeric: 		false,
			numericId: 		'controls'
		}; 
		
		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 clickable = true;
			obj.width(w); 
			obj.height(h); 
			obj.css("overflow","hidden");
			var ts = s-1;
			var t = 0;
			var child=2;
			$("ul", obj).css('width',s*w);	
			
			
			
		
			if(options.continuous){
				$("ul", obj).prepend($("ul li:last-child", obj).clone().css("margin-left","-"+ w +"px"));
				$("ul", obj).append($("ul li:nth-child(2)", obj).clone());
				$("ul", obj).css('width',(s+1)*w);
				
				var s2 = $("li", obj).length;
				//alert (s2);
				
				for(var i=1;i<=s2;i++){		
					$("ul li:nth-child("+i+")")	.attr('id', i)
						};					
				$("ul li:nth-child("+child+")").addClass('active');
				
				
			};	
					
			
			if(!options.vertical) $("li", obj).css('float','left');
								
			if(options.controlsShow){
				var html = options.controlsBefore;				
				if(options.numeric){
					html += '<ol id="'+ options.numericId +'"></ol>';
				} else {
					if(options.firstShow) 
					html += '<span class="prev" id="'+ options.firstId +'"><a id="'+ options.firstId +'" href=\"javascript:void(0);\">'+ options.firstText +'</a></span>';
					html += '<div id="controls"><span class="prev" id="'+ options.prevId +'"><a id="'+ options.prevId +'" href=\"javascript:void(0);\"><span class="button_title">'+ options.prevText +'</span></a></span>';
					html += '<span class="next" id="'+ options.nextId +'"><a id="'+ options.nextId +'" href=\"javascript:void(0);\"><span class="button_title">'+ options.nextText +'</span></a></span></div>';
					if(options.lastShow) html += ' <span class="next" id="'+ options.lastId +'"><a id="'+ options.lastId +'" href=\"javascript:void(0);\">'+ options.lastText +'</a></span>';				
				};
				
				html += options.controlsAfter;	
				
									
				$(obj).before(html);										
			};
			
			if(options.numeric){									
				for(var i=0;i<s;i++){						
					$(document.createElement("li"))
						.attr('id',options.numericId + (i+1))
						.html('<a rel='+ i +' href=\"javascript:void(0);\">'+ (i+1) +'</a>')
						.appendTo($("#"+ options.numericId))
						.click(function(){							
							animate($("a",$(this)).attr('rel'),true);
						}); 												
				};							
			} else {
				
				if(!isiPad())
					{
					//alert(isiPad())

					
					$("a#"+options.nextId).click(function(e){
							e.preventDefault();	
							animate("next",true);
					});
				
					$("a#"+options.prevId).click(function(e){
						e.preventDefault();	
						animate("prev",true);
					});	
					$("a#"+options.firstId).click(function(e){		
					e.preventDefault();	
					});				
					$("a#"+options.lastId).click(function(e){		
					e.preventDefault();				
					});		
						
					}
				else{//alert(isiPad())
					$("a#"+options.nextId).click(function(e){		
						animate("prev",true);
						e.preventDefault();
					});
				
					$("a#"+options.prevId).click(function(e){		
						animate("next",true);
						e.preventDefault();				
					});	
					$("a#"+options.firstId).click(function(e){		
						animate("first",true);
						e.preventDefault();
					});				
					$("a#"+options.lastId).click(function(e){		
						animate("last",true);
						e.preventDefault();				
					});
				}
			};
			
			function setCurrent(i){
				i = parseInt(i)+1;
				$("li", "#" + options.numericId).removeClass("current");
				$("li#" + options.numericId + i).addClass("current");
			};
			
			function adjust(){
				if(t>ts) t=0
				if(t<0) t=ts
				if(!options.vertical) {
					$("ul",obj).css("margin-left",(t*w*-1));
				} else {
					$("ul",obj).css("margin-left",(t*h*-1));
				}
				
				clickable = true;
				if(options.numeric) setCurrent(t);
			};
			
			function animate(dir,clicked){
				if (clickable){
					clickable = false;
					var ot = t;				
					switch(dir){
						case "next":
							t = (ot>=ts) ? (options.continuous ? t+1 : ts) : t+1;						
							break; 
						case "prev":
							t = (t<=0) ? (options.continuous ? t-1 : 0) : t-1;
							break; 
						case "first":
							t = 0;
							break; 
						case "last":
							t = ts;
							break;
						default:
							t = dir;
							break; 
					};	
					var diff = Math.abs(ot-t);
					var speed = diff*options.speed;						
					if(!options.vertical) {
						p = (t*w*-1);
						//alert(dir)
						
						//add active class to the list item on navigation
						if(dir=="next"){
							var last = $("ul li:last-child").index();
							var current= $('.active').index();
							var current_pos = $('.active').attr('id');
					 		
							//alert("the last item is"+last +"current position on list is "+current_pos);
							
							if(last==current_pos){
								// alert("must move first");
								var first=$("ul li:first-child").attr('id');
								
								$("ul li:nth-child("+(current_pos)+")").removeClass('active')
								$("ul li:nth-child("+(first)+")").removeClass('active').next().addClass('active');
								
								$("ul",obj).animate(
								{ marginLeft: p}, 
								{ queue:false, duration:speed, complete:adjust,}
								);		
							}
							else{
									$("ul li:nth-child("+(current_pos)+")").removeClass('active').next().addClass('active');
									$("ul",obj).animate(
									{ marginLeft: p}, 
									{ queue:false, duration:speed, complete:adjust,}
									);		
									}
							}
						
						else{
							var first = $("ul li:first-child").attr('id');
							var current= $('.active').index();
							var current_pos = $('.active').attr('id');
														
							 if(first==current){
								 //alert("move to the last");
								$("ul li:nth-child("+(current_pos)+")").removeClass('active')
								last = $("ul li:last-child").attr('id');
								$("ul li:nth-child("+(last)+")").removeClass('active').prev().addClass('active'); 
								$("ul",obj).animate(
								{ marginLeft: p}, 
								{ queue:false, duration:speed, complete:adjust,}
								);		
							 }
							 else{
								 $("ul li:nth-child("+(current_pos)+")").removeClass('active').prev().addClass('active');
								$("ul",obj).animate(
								{ marginLeft: p}, 
								{ queue:false, duration:speed, complete:adjust,}
								);		
							}
						}
						
					} else {
						p = (t*h*-1);
						$("ul",obj).animate(
							{ marginTop: p }, 
							{ queue:false, duration:speed, complete:adjust }
						);					
					};
					
					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.numeric) setCurrent(0);
		
			if(!options.continuous && options.controlsFade){					
				$("a#"+options.prevId).hide();
				$("a#"+options.firstId).hide();				
			};
			
			function isiPad(){
				return (navigator.platform.indexOf("iPad") != -1);
			}
			
			if(isiPad())
			{}
			else{
//				$("span.prev").hover(function(){
//					$("span.prev a").fadeTo(500, .7).css("visibility", "visible"); // This sets the opacity to 100% on hover
//				},function(){
//					$("span.prev a").fadeTo(500, 0); // This sets the opacity back to 60% on mouseout
//				});
//				
//				$("span.next").hover(function(){
//					$("span.next a").fadeTo(500, .7).css("visibility", "visible"); // This sets the opacity to 100% on hover
//				},function(){
//					$("span.next a").fadeTo(500, 0); // This sets the opacity back to 60% on mouseout
//				});
			}
							
		});
	  
	};

})(jQuery);


$(document).ready(function(){	
		$("#slider").easySlider({
			auto: false,
			continuous: true,
			nextId: "next",
			prevId: "prev",
			speed: 600,
		});
		
		/*
		$("#slider").swipe({
			swipeLeft:swipeLeft,
			swipeRight:swipeRight,
			threshold:30
		});
		*/
});