$().ready(function(){
	var items = $("#content>li").length;
	var current = 1;
	var width = 820; // =========ANCHURA

	$("#content").css("width",width*items);
	$("#content").css("left",0);

	$("#btn-izquierdo").click(function(){
		if(current-1<1)
			{
			var dest = (items-1)*width*-1;
			current = items;
			}
		else
			{
			var dest = $("#content").css("left");
				dest = parseInt(dest) + width;
			current -= 1;
			}
		move(dest);
	});

	$("#btn-derecho").click(function(){
		if(current+1>items)
			{
			var dest = 0;
			current = 1;
			}
		else
			{
			var dest = $("#content").css("left");
				dest = parseInt(dest) - width;
			current += 1;
			}

		move(dest);
	});

	function move(dest){
		$("#content").animate({
			left:dest
		},1000);
	}
});