Highlighting tabs when specific forums are displayed

[mattltm]

I have 2 menu buttons for the forums on my site, one which takes you to the Award forums and one which takes you the the Main forums.

I have used ?tabid=xx to highlight the correct "Award forums" menu button when the award forums are displayed but when someone clicks into a sub forum, the "Main forums" menu button is highlighted.

Is there a way that I can append ?tabid=xx to specific forums so that the correct menu button is highlighted when the forum is displayed? I know it will display as I want it because I can manually add ?tabid=xx to the forum link and get the correct result.

I guess I need some code that says "if this forum is a subforum of froumid 8 then append ?tabid=xx to the url"?

Thanks.