Hi,
if you want the one on the left, they just have different html per page with menu
Just draw it.
You could also look at
http://webreference.com/dhtml/ - this menu is crossbrowser and pretty good.
The only problem with it - in NS4.7, if you have on your page META with charset UTF8 it does not work. But it is a really rare case.(it hit me, though)