var timer1 = 0; 
function closeSubmenus() {
	clearTimeout(timer1);
	timer1 = setTimeout('_closeAllSubmenus()', 500);
}
function _closeAllSubmenus() {
	mainNav = document.getElementById('main-navigation');
	submenus = mainNav.getElementsByTagName('ul');
	for (i = 0; i < submenus.length; i++) {
		if (submenus[i].className.match(/submenu/) && ! submenus[i].className.match(/submenuitem/) ) {
			submenus[i].style.left='-999px';
		}
	}
}


function openSubmenu(navigationitem_id) {
	navmenu = document.getElementById('submenu-' + navigationitem_id);
	if (!navmenu) {
		return;
	}
	_closeAllSubmenus();
	clearTimeout(timer1);
	navmenu = document.getElementById('submenu-' + navigationitem_id);
	navmenu.style.left='0';
}
function closeOverlay() {
	return;
	overlayDiv = document.getElementById('overlaycontainer');
	overlayDiv.style.display='none';
}
function openOverlay() {
	return;
	overlayDiv = document.getElementById('overlaycontainer');
	overlayDiv.style.left='-999px';
}