/*
 *	markup example for $("#images").easySlider();
 *	
 * 	<div id="images">
 *		<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.easySliderListado = function(options){
	  	var obj = $("#slider2");
	  
		// default configuration properties
		var defaults = {
			prevId: 		'prevBtn2',
			prevText: 		'&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;', //Texto boton Previous
			nextId: 		'nextBtn2',	
			nextText: 		'&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;', //Texto boton Next
			orientation:	'', //  'vertical' is optional;
			speed: 			800			
		}; 
		
		var options = $.extend(defaults, options);  
		
		return obj.each(function() {  
			//obj = $(this); 				
			//obj = $("#slider"); 
			var cantidadObjetos = 4;
			var rangoSlice = cantidadObjetos+1;
			
			var s = $("li", obj).length;
			var w = $("li", obj).width()*cantidadObjetos;//obj.width(); 
			var h = obj.height(); 
			var ts = Math.ceil((s-1)/rangoSlice)+1;
			var t = 0;
			var vertical = (options.orientation == 'vertical');
			$("ul", obj).css('width',s*w);			
			if(!vertical) $("li", obj).css('float','left');
			$(obj).after('<span id="'+ options.prevId +'"><div>'+ options.prevText +'</div></span> <span id="'+ options.nextId +'"><div>'+ options.nextText +'</div></span>');		
			$("div","#"+options.prevId).hide();
			$("div","#"+options.nextId).hide();
			$("div","#"+options.nextId).click(function(){		
				animate("next");
				//if (t>=ts) obj.fadeOut();//$(this).fadeOut();
				$("div","#"+options.prevId).fadeIn();
			});
			$("div","#"+options.prevId).click(function(){		
				animate("prev");
				//if (t<=0) obj.fadeOut(); //$(this).fadeOut();
				$("div","#"+options.nextId).fadeIn();
			});	
			function animate(dir){
				
				if(dir == "next"){
					t = (t>=ts) ? ts : t+1;	
				} else {
					t = (t<=0) ? 0 : t-1;
				};		
				
				if(!vertical) {
					
					
					if(  (t*cantidadObjetos) < s ){
						
						p = (t*w*-1);					
						$("ul",obj).animate(
							{ marginLeft: p }, 
							options.speed
						);			
					}else{
					
						t--;
						p = (t*w*-1);					
						$("ul",obj).animate(
							{ marginLeft: p }, 
							options.speed
						);	
					};
					
				} else {
					p = (t*h*-1);
					$("ul",obj).animate(
						{ marginTop: p }, 
						options.speed
					);					
				}
			};
			if(s>1) $("div","#"+options.nextId).fadeIn();	
		});
	  
	};

})(jQuery);