how to “undo” jQuery toggle callback?

how to “undo” jQuery toggle callback?

Here's the demo...

http://brinsterinc.com/ovnproj/app/gestation.html

Click the purple stack and the menu area shows, and there's a callback to fade in the menu items.

When the menu hides via the toggle, I'd like the steps to reverse.  That is, the menu items to fade away before the menu area hides.

Do I have to code it without the toggle?

BTW, trying to avoid needing jQuery UI.

Here's the code...

$('div.bars').click(function(){ $(this).next().toggle("slow", function(){ $("div.ovnMenu ul").fadeTo("slow", 1.0); }); });

Any way to accomplish this?