$(document).ready(function(){
	$("#featured > ul").tabs({fx:{opacity: "toggle"}}).tabs("rotate", 7000, true);	
	$(".menu_principal ul ").css({display: "none"});
	$(".menu_principal li").hover(function(){
		$(this).find('ul:first').css({visibility: "visible", display: "none"}).slideDown(200);},
		function(){
				$(this).find('ul:first').css({visibility: "hidden"});
		}
	);	
});