APEX

All,
I searched the forum to see if this has been posted as well as google but came up with no hits.
Is there a way to re-create the collapsible region found on the main Object Browser's page? I would like to put a navigational bar there, then when clicked, it goes to the appropriate page.

I have seen an example of a DHTML navigation tree here,

http://apex.oracle.com/pls/otn/f?p=11933:5:3264750685759297::NO:RP::

..but cannot find an example that shows how to create a collapsible region with a navigation bar in it.
Could anyone point me in the right direction.
{PR}