//open menu with given ID 
function openMenu(menuID,linkObj)
{
	//if the menu code is ready
	if(um.ready)
	{ 
		//find co-ordinates of link object
		var coords = {
			'x' : um.getRealPosition(linkObj,'x'),
			'y' : um.getRealPosition(linkObj,'y')
			};
			
		//increase y-position to place it below the link
		coords.y += (linkObj.offsetHeight + 4);
		coords.x -= 17;

		//activate menu at returned co-ordinates
		um.activateMenu(menuID, coords.x + 'px', coords.y + 'px');
	}

}

//close menu with given ID
function closeMenu(menuID)
{
	//if the menu code is ready
	if(um.ready)
	{
		//deactive menu
		um.deactivateMenu(menuID);
	}
}