// JavaScript Document
$(document).ready(function () {	
	$('#nav li').hover(
		function () {
			//show its submenu
			$('ul', this).stop(true, true).slideDown(500);
		}, 
		function () {
			//hide its submenu
			$('ul', this).stop(true, true).slideUp(250);			
		}
	);
	
});