$(document).ready(function() {
			// Toggle the selected menu's class and expand or collapse the menu
			 $('#main-menu > li').mouseover(function(){  
				 $(this).find('ul').css('visibility', 'visible');
			 });  
			 //When mouse is removed  
			 $('#main-menu > li').mouseout(function(event){
				 $(this).find('ul').css('visibility', 'hidden');
			 });
			 
 		});