$(function(){
	var totalBanner=$('#banner a').length;
	var banner=0;
	next();
	var timer=setInterval(next,7000);

	function next(){
		banner=banner==totalBanner?1:banner+1;
		$("#banner a img").stop();
		$("#banner a").stop();
		$("#banner a div").stop();

		$("#banner a[id!='"+banner+"']").fadeTo("normal",0).css("z-index",1);
		$("#banner a[id!='"+banner+"'] div").fadeTo("normal",0);
		$("#banner a[id='"+banner+"'] img").css({"margin-top":"-240px"});
		$("#banner a[id='"+banner+"']").fadeTo("normal",1).css("z-index",10);
		$("#banner a[id='"+banner+"'] div").fadeTo("normal",1);
		$("#banner a[id='"+banner+"'] img").animate({"margin-top":"0px"},7000,"linear");
	}
	$("#esquerda").click(function(){
		next();
		clearInterval(timer);
		timer=setInterval(next,7000);
	});
	$("#direita").click(function(){
		next();
		clearInterval(timer);
		timer=setInterval(next,7000);
	});
});