NOTE that closable & resizable pane-options must be enabled when the Layout initializes,
if you want to be able to disable/re-enabled these features later.
A layout-instance can be retrieved from the layout-container element.
You can also get the instance of the 'containing layout' from
any 'child-element' (pane, resizer or togger) of a layout...
$( [containerSelector] ).layout()
$( [containerSelector] ).data("layout")
$( [paneSelector] ).data("parentLayout")
The outer-west pane is BOTH a layout-pane and a layout-container...