A third level to DD Tab Menu ?

[patch]

Script: DD Tab Menu
http://www.dynamicdrive.com/dynamicindex1/ddtabmenu.htm


Hi,
The DD Tab menu is a perfect script for my needs. However, I do have one question which I can't figure out...

Is it possible to make the Tab menu contain 3 levels ? (Currently it has 2)

ie..

TAB Level 1 - (As now)
|
-- TAB Level 2 (As now)
|
--- TAB Level 3 (new????)


I've searched all over to find a way of doing this, but no luck. Anyone have any ideas??

Thanks in Advance

Patch