var $ = jQuery.noConflict();
$(document).ready(function() {
$(" #menu ul ").css({display: "none"});
$(" #menu li").hover(function(){
$(this).find('ul:first').css({visibility: "visible",display: "none"}).slideDown(400);
},function(){
$(this).find('ul:first').css({visibility: "hidden"});
});
});