slideOpen = function (evt_or_pane) {
		if (!isInitialized()) return;
		var	evt		= evtObj(evt_or_pane)
		,	pane	= evtPane.call(this, evt_or_pane)
		,	s		= state[pane]
		,	delay	= options[pane].slideDelay_open
		;
		if (pane === "center") return; // validate
		// prevent event from triggering on NEW resizer binding created below
		if (evt) evt.stopImmediatePropagation();

		if (s.isClosed && evt && evt.type === "mouseenter" && delay > 0)
			// trigger = mouseenter - use a delay
			timer.set(pane+"_openSlider", open_NOW, delay);
		else
			open_NOW(); // will unbind events if is already open

		/**
		 * SUBROUTINE for timed open
		 */
		function open_NOW () {
			if (!s.isClosed) // skip if no longer closed!
				bindStopSlidingEvents(pane, true); // BIND trigger events to close sliding-pane
			else if (!s.isMoving)
				open(pane, true); // true = slide - open() will handle binding
		};
	}
slideOpen / slideClose / slideToggle

Pass-though methods for sliding