$(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)
});