WebKit QT4.7 browser failed at http://www.intel.in to create megamenu on menu button?

WebKit QT4.7 browser failed at http://www.intel.in to create megamenu on menu button?

What can be the cause? What are the possible ways to make changes inside browserapplication and Api's which can remove this bug?

Website name is www.intel.in and bug is "menu failed to expand on mouse hovering"?

$(".directory").live("click mouseenter", function (event) {
if (event.type == "click" && $(this).attr("hasmouse") == "true") {
$(this).attr("hasmouse", "");
closeNavMenu(1);
} else {
$(this).attr("hasmouse", "true");
if (!$(this).find("a").hasClass("selected")) {
$(".directory a, .sites a, .library a, .my-intel .link, .my-intel-link, .save").removeClass("selected");
closeMyIntel();
closeSigninBox();
$(this).find("a").addClass("selected");
$(this).addClass("selected");
$("#menu-wrapper").show();
$(".boxnav.navbg").slideDown(slideTimer, function () {
$('#subnav-wrapper, #submenu-wrapper').show();
$("#subnav-wrapper").css({
position: "fixed",
top: "61px"
});
$('#subnav-wrapper ul.subnav').css('background-position', '-934px bottom');
$('#subnav-wrapper ul.subnav li:first-child').addClass('active');
});
updateMenuHeight();
//closeNavMenu();
}
}
});