resizeChildren = function (evt_or_pane, skipRefresh) {
		var	pane = evtPane.call(this, evt_or_pane);

		if (!options[pane].resizeChildren) return;

		// ensure the pane-children are up-to-date
		if (!skipRefresh) refreshChildren( pane );
		var pC = children[pane];
		if ($.isPlainObject( pC )) {
			// resize one or more children
			$.each( pC, function (key, child) {
				if (!child.destroyed) child.resizeAll();
			});
		}
	}
Whenever a pane resizes or opens that has a nested layout, trigger resizeAll

@param {(string|Object)}	evt_or_pane		The pane just resized or opened