Navigation bar - how to highlight tabs that are URL links to specific forums

[gfcguy]

Hi-

My current navigation bar structure uses URL links on some tabs that go directly to specific forums.  However when I click on the tab to go to the specific forum, the tab doesn't highlight - however the tab to the main forums application does highlight (or stay highlighted after clicked).  Is there any way to have the specified URL in the navigation bar become the highlighted tab and not the main forums index page navigation tab?  I don't think that this was an issue with 3.4.7

Many thanks!