var activemenu = null;
function showhide(item)
{
	var submenu = item.parentNode.getElementsByTagName('ul');
	if (submenu.length > 0) {
		if (submenu[0] == activemenu) {
			Effect.BlindUp(activemenu,{duration: 0.5});
			activemenu = null;
		} else {
			if (activemenu)
				Effect.BlindUp(activemenu,{duration: 0.5});
			activemenu = submenu[0];
			Effect.BlindDown(activemenu,{duration: 0.5}); 
		}
		return false;
	}
	return true;
}