Our forum uses javascript to tab some of the categories and so far so good.
You can see it here:
http://www.dailysportspages.com/forums
The question I have is whether it is legal (by spider standards) to have a script that detects whether the visitor is human or a spider...and if spider then force them to use a different template that doesn't have the tabs.
I've heard somewhere that this could get you banned from some search engines but I'm not 100% sure. Anyone know?