$(document).ready(function () {
    $(".mainNav ul li").hoverIntent(function () {
       if($(this).attr("id") == "AboutUs"){
           $("#SearchBox").animate({opacity: 0.25},500);
	   $(".leftNav").animate({opacity: 0.25},500);
       }
       $(this).children("ul.topSubNav").slideDown();
    }, function(){
       $(this).children("ul.topSubNav").hide();
       if($(this).attr("id") == "AboutUs"){
           $("#SearchBox").animate({opacity: 1.0},500);
	   $(".leftNav").animate({opacity: 1.0},500);
       }
    });
});