/*
 * 	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 = {		
			SlideId: 		1,	
			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:			true,
			pause:			4000,
			continuous:		true, 
			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 new_t = 0;
			$("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);
			};				
			
			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 id="'+ options.firstId +'"><a href=\"javascript:void(0);\">'+ options.firstText +'</a></span>';
					/*html += ' <span id="'+ options.prevId +'"><a onmouseenter=\"ShowNavSlide('+ options.SlideId +');\" href=\"javascript:void(0);\"></a></span>';
					html += ' <span id="'+ options.nextId +'"><a onmouseenter=\"ShowNavSlide('+ options.SlideId +');\" href=\"javascript:void(0);\"></a></span>';*/
					if (s>1) {
						html += ' <span style="z-index:500;" id="'+ options.prevId +'"><a href=\"javascript:void(0);\"><img src="images/a_left.png" alt="previous" /></a></span>';
						html += ' <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\"><img src="images/a_right.png" alt="next" /></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=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 {
				
				$(this).mouseenter( function () {
				   	$('#'+ options.prevId +' a').css('visibility','visible');
				   	$('#'+ options.nextId +' a').css('visibility','visible');
				   	
				    });
				    
				    $("#content").mouseleave( function () {
				   	$('#'+ options.prevId +' a').css('visibility','hidden');
				   	$('#'+ options.nextId +' a').css('visibility','hidden');
				   	
				    });
				$("a","#"+options.nextId).click(function(){
							
					animate("next",true);
				});

				$("a","#"+options.prevId).click(function(){
					
					animate("prev",true);	
				});	
				
				
				$(this).bind('touchstart', function(e){
				    
				    down_x = e.originalEvent.touches[0].pageX;
				  });
				  
				  $(this).bind('touchmove', function(e){
				    var $e = $(e.target);
				    var touch = e.originalEvent.touches[0] || e.originalEvent.changedTouches[0];
				    up_x = e.originalEvent.touches[0].pageX;
				     do_slide_ipad(down_x,up_x);
				  });
				  
				  
				  $(this).bind('touchend', function(e){
				    do_slide_ipad(down_x,up_x);
				  });	

			};

		
			function do_slide_ipad(down_x,up_x)
			{
			  if ((down_x - up_x) > 50)
			    {
			        animate("next",true);
			    }
			    if ((up_x - down_x) > 50)
			    {
			        animate("prev",true);
			    }
			}
			
			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);
				
				var IndexImg = t;
				var ImgSlide = "#ImgSlide_" + options.SlideId + "_" + (IndexImg);
				
				for (i=0;i<=ts;i++) {
					ImgSlide_old = "#ImgSlide_" + options.SlideId + "_" + i;
					$(ImgSlide_old).attr("src","images/dot_white.png");
				}
				if ($(ImgSlide) && (t<=ts)) $(ImgSlide).attr("src","images/dot_black.png");
				else {
					var ImgSlide = "#ImgSlide_" + options.SlideId + "_0";
					$(ImgSlide).attr("src","images/dot_black.png");
					
				}

			};
			
			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; 
						case "one":
							t = new_t;
							break; 							
						default:
							t = dir;
							break; 
					};	
					
					val_image = t;
					if (val_image>ts) val_image = 0;
					if (val_image == -1) val_image = ts;
					$('.cadre_big_home').html($('#Img' + val_image).attr("alt"));
					var diff = Math.abs(ot-t);
					var speed = diff*options.speed;						
					if(!options.vertical) {
						
						p = (t*w*-1);
						$("ul",obj).animate(
							{ marginLeft: p }, 
							{ queue:false, duration:speed, complete:adjust },function() {
										}
						);				
					} else {
						p = (t*h*-1);
						
						$("ul",obj).animate(
							{ marginTop: p }, 
							{ queue:false, duration:speed, complete:adjust },function() {
										}
							
						);					
					};
					
					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();
						};					
					};	
					clearTimeout(timeout);
					timeout = setTimeout(function(){
							
							animate("next",false);
							
						},diff*options.speed+options.pause);
						
					
					
			};
			
				
			};
			
	
			// init
			var timeout;
		
				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();				
			};				
			
		});
	  
	};
	
	


})(jQuery);