$(document).ready(function () {
$('#menu li.primary_nav_item').find('div.subnav_container').hide();
$('#menu li.primary_nav_item')
.mouseenter(function (e) {
	var $elm = $(this);
	$elm.data('mouseover', true);
	setTimeout(function () { if ($elm.data('mouseover')) $elm.children('div.subnav_container:hidden').slideDown(); }, 100);
})
.mouseleave(function (e) {
	var $elm = $(this);
	$elm.data('mouseover', false);
	$elm.children('div.subnav_container:visible').slideUp();
})
});