Hoping this makes sense...

In theory, I have a navigation bar, that changes the page of the main iframe (I couldnt figure out how else people change pages in html/css..). When that page is active the button u pushed is supposed to have a new background image.

I got it all down, navigation, rollovers, iframe, cant seem to figure out or dig the answer as to how to change the active buttons background.

Was trying to see if anyone could attempt to solve this riddle with me. )

....Hope that made sense, thankyou in advance!

http://emjay2d.zxq.net/ <--- This is what im doing, and the code/design I have as of right now, it may help to understand what im trying to do.