// JavaScript Document
$(document).ready(function () {  
  
    $('#dropdown').hover(  
          
        function () {  
  
            //change the background of parent menu                
            $('#dropdown li a.parent').addClass('hover');  
                  
            //display the submenu  
            $('#dropdown ul.children').show(500);  
                  
        },  
          
        function () {  
  
            //change the background of parent menu  
            $('#dropdown li a.parent').removeClass('hover');              
  
            //display the submenu  
            $('#dropdown ul.children').hide();  
                  
        }  
          
    );  
          
});