(function($) {


	$.fn.easySlider = function(options){
	  
		// default configuration properties
		var defaults = {			
			prevId: 		'prevBtn',
			prevText: 		' ',
			nextId: 		'nextBtn',	
			nextText: 		' ',
			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, 
			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;
			$("ul", obj).css('width',s*w);	
			var down_x = null;
			var up_x = null;
			
			
			$().ready(function(){
			  $(obj).mousedown(function(e){
			    e.preventDefault();
			    down_x = e.pageX;
			  });
			  $(obj).mouseup(function(e){
			    up_x = e.pageX;
			    do_work();
			  });
			  $(obj).bind('touchstart', function(e){
				down_x = e.originalEvent.touches[0].pageX;
			  });
			  $(obj).bind('touchmove', function(e){
				e.preventDefault();
				up_x = e.originalEvent.touches[0].pageX;
			  });
			  $(obj).bind('touchend', function(e){
				do_work();
			  });
			});
			
			function do_work()
				{
				  if ((down_x - up_x) > 50)
					{
						slide_right();
					}
					if ((up_x - down_x) > 50)
					{
						slide_left();
					}
				}
				function slide_right()
				{
				  animate("next",true);	
				}
				function slide_left()
				{
				  animate("prev",true);	
				}

		
		
				if(options.continuous){
					if(s>1){
						$("ul", obj).prepend($("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){
				
					if(s>1){
						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 += ' <div class="slidernav"><div class="slidercontrols"><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></div></div>';
							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 {
					$("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;
					$("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);
							$("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();				
				};				
				
			});
		  
		};

})(jQuery);