$(document).ready(function(){  
       	$("ul.topnav li a").hover(function() { //When trigger is clicked...  
      
          //Following events are applied to the subnav itself (moving subnav up and down)  
          $(this).parent().find("ul.subnav").slideDown('slow').show() //Drop down the subnav on click  
 
          $(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"  
       		});  
 });