Linking to a page within a frameset (no Flash)

Hello all,

The situation:

  • I have a HTML frameset with a left frame (menu) and a right frame (contents). Linking from one frame to the other and all that stuff works like a charm.
  • I have an intro page that has nothing to do with the frameset.

The problem:
I want to be able to put a link in the intro page that targets a specific HTML page that is supposed to open in the right frame of the frameset. So when the user clicks the link on the intro page, the frameset has to open and show the target page in the right frame.

I hope I wrote this clearly enough… PHP, JavaScript… if it helps, every solution is welcome. The only thing I have to keep are the frames.

Thanks in advance!