function close_NOW () {
			if (s.isClosed) // skip 'close' if already closed!
				bindStopSlidingEvents(pane, false); // UNBIND trigger events - TODO: is this needed here?
			else if (!s.isMoving)
				close(pane); // close will handle unbinding
		}
@param {(string|Object)}	evt_or_pane		The pane being opened, ie: north, south, east, or west