function toggle(boo,ID) {
	var subNav = util.$(ID);
	var childs = subNav.getElementsByTagName('UL');
	childs.item(0).style.display = "none";
	if(boo) {
		childs.item(0).style.display = "block";
	} else {
		childs.item(0).style.display = "none";
	}
}