slideToggle = function (evt_or_pane) {
		var pane = evtPane.call(this, evt_or_pane);
		toggle(pane, true);
	}
Must set left/top on East/South panes so animation will work properly

@param {string}	pane	The pane to lock, 'east' or 'south' - any other is ignored!
@param {boolean}	doLock  true = set left/top, false = remove