(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: 			600,
			auto:			false,
			pause:			4000,
			continuous:		false
		}; 
		
		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;
				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);										
			};
	
			$("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 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;
								break; 
							case "first":
								t = 0;
								break; 
							case "last":
								t = ts;
								break; 
							default:
								break; 
						};	
					var diff = Math.abs(ot-t);
					var speed = diff * options.speed;						
					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 (clicked) clearTimeout(timeout);
					if (options.auto && dir=="next" && !clicked)
						{;
							timeout = setTimeout(function(){ animate("next",false); }, diff * options.speed + options.pause);
						};
				};

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

})(jQuery);