/*
 *	markup example for $("#images").dSlider();
 *	
 * 	<div id="images">
 *		<ul>
 *			<li><img src="../js/images/01.jpg" alt="" /></li>
 *			<li><img src="../js/images/02.jpg" alt="" /></li>
 *			<li><img src="../js/images/03.jpg" alt="" /></li>
 *			<li><img src="../js/images/04.jpg" alt="" /></li>
 *			<li><img src="../js/images/05.jpg" alt="" /></li>
 *		</ul>
 *	</div>
 *
 */
 
 (function($) {

	$.fn.dSlider = function(options){

	  
	// default configuration properties
		var defaults = {
			prevId: 		'prev',
			prevText: 		'Anterior',
			nextId: 		'next',	
			nextText: 		'Siguiente',
			orientation:	'', //  'vertical' is optional;
			speed: 			300,
			interval: 5000,
			autoplay: true
					
		}; 
		
		var options = $.extend(defaults, options);  
		
		return this.each(function() {  
			var obj = $(this); 			
			$(obj).click(function(){stop()});
			 	
			var s = $("li", obj).length;
			if(s<50){ 
			
				var c=parseInt(50/s); 
				var x=$(obj).find("ul").html(); for(i=0;i<=c;i++) $(obj).find("ul").append(x); 
				s = $("li", obj).length; }
				
			var w = obj.width(); 
			var h = obj.height(); 
			var wli =  $("li", obj).width(); 
			var hli =  $("li", obj).height(); 
			var ts = s-1;
			var t = 0;
			
		
			
			
			var vertical = (options.orientation == 'vertical');
			
			$("ul", obj).css('width',s*wli*10);			
			
			if(!vertical) $("li", obj).css('float','left');
			
			//// botones
				$("#"+options.prevId).css("cursor","pointer").attr("title",options.prevText);
				$("#"+options.nextId).css("cursor","pointer").attr("title",options.nextText);
				
				$("#"+options.prevId).click(function(){animate('prev'); clearInterval(stime);});
				$("#"+options.nextId).click(function(){animate('next'); clearInterval(stime);});
			//// botones
			
			var stime=false;
			if(options.autoplay) run();
			
			function run()
			{
				stime=setInterval(function(){animate('next');},options.interval);
			}
			
			function stop()
			{
				clearInterval(stime);
			}	
			
			function iniciar()
			{
				stop();
			
				if(!vertical) {
					
					$("ul",obj).css({marginLeft:0});
					
				} else {
					p = 0;
					$("ul",obj).animate(
						{ marginTop: p }, 0
					);					
				}
				
				t=0;
				
				run();
				
			}
			
			function animate(dir){
				
				
				
				if(dir == "next"){
					
					// para que no quede el ultimo solo
					if((s-2)==t) {iniciar(); return;}
					
					t = (t>=ts) ? ts : t+1;	
				} else {
					t = (t<=0) ? 0 : t-1;
				};								
				
				if(!vertical) {
					p = (t*wli*-1);
					$("ul",obj).animate(
						{ marginLeft: p }, 
						options.speed
					);				
				} else {
					p = (t*hli*-1);
					$("ul",obj).animate(
						{ marginTop: p }, 
						options.speed
					);					
				}
			};
			

			
		});
	  
	};
	

})(jQuery);