var visibleMenu = null;
$('#dropdownNavigation > li').each(function() {
	this.onmouseover = function() {
		var ul = this.getElementsByTagName('ul')[0];
		if (ul.timeoutHandle) {
			clearTimeout(ul.timeoutHandle);
			ul.timeoutHandle = false;
		}
		if (visibleMenu && visibleMenu != ul) {
			if (visibleMenu.timeoutHandle) {
				clearTimeout(visibleMenu.timeoutHandle);
				visibleMenu.timeoutHandle = false;
			}
			visibleMenu.style.display = 'none';
		}
		visibleMenu = ul;
		ul.style.display = 'block';
	};
	this.onmouseout = function() {
		var ul = this.getElementsByTagName('ul')[0];
		if (ul.timeoutHandle) {
			clearTimeout(ul.timeoutHandle);
		}
		ul.timeoutHandle = setTimeout(function() {
			ul.style.display = 'none';
		}, 350);
	};
}
);