Frames and active menu highlight

[aveon]

I have an idea for navbar links i dn konw how u guys did it on vb.org but yea if its fpssible i want to do somethin like that on my site so in navbar when mouse over on the menu buttons in the top frame, the buttons gets highlighted (The menu buttons are in graphics). When a menu button is clicked, I want the highlight to stay highlighted, can this be done? (Can use php scripting if necessary)

And i want to give some links from forumdisplay.php and i want this script to be done on those links too,,,

I know how to do highlighting when mouse over, and in a frame-less design. But in a frame-based design, the top frame is not refreshing when doing mouse clicks, because the target will be the right frame which gets refreshed to display the content.