$(document).ready(function(){  
    
    $("ul.dropdown li span").mouseover(function() { //When trigger is moused over...  
  
        //Following events are applied to the subnav itself (moving subnav up and down)  
        $(this).parent().find("ul.subnav").slideDown('fast').show(); //Drop down the subnav on mouse over  
  
        $(this).parent().hover(function() {  
        }, function(){  
            $(this).parent().find("ul.subnav").slideUp('fast'); //When the mouse hovers out of the subnav, move it back up  
        });  
  
        //Following events are applied to the trigger (Hover events for the trigger)  
        }).hover(function() {  
            $(this).addClass("subhover"); //On hover over, add class "subhover"  
        }, function(){  //On Hover Out  
            $(this).removeClass("subhover"); //On hover out, remove class "subhover"  
    });  
  
});