What's wrong with my code?

[Xeon3D]

Hi. I'm trying to add another link to my navbar (portal), and it's working 99% (it highlights when selected and unhighlights when other tab is selected) but the forums tab never unhighlights if I change to the Portal one.

Here's the contents of my navtab edit (the dashes delimit the portion I added):



Code:
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Code is only visible to licensed users, and only when logged into the forums.
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And here's the head part of /index.php (the portal file):



Code:
---------------
Code is only visible to licensed users, and only when logged into the forums.
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Can anyone tell me how can I make it unhighlight the Forums tab whenever I pick the Portal one? (as in standard vb behavior)?

BTW site is www.xeon3d.info

Thanks in advance.