$(document).ready(function(){ 
function addMega(){
        $(this).addClass("hovering");
        }
    function removeMega(){
        $(this).removeClass("hovering");
        }

var megaConfig = {
         interval: 100,
         sensitivity: 4,
         over: addMega,
         timeout: 200,
         out: removeMega
    };
   $("li.mega").hoverIntent(megaConfig)
});