$(document).ready(function(){
$(".nav ul li a").mousemove(function(){
$(this).next().css("display","block");
});
$(".nav ul li a").mouseout(function(){
$(this).next().css("display","none");
});
$(".nav ul li ul").mousemove(function(){
$(this).css("display","block");
});
$(".nav ul li ul").mouseout(function(){
$(this).css("display","none");
});
});