Menus over frames of frameset

Hallo Angus and all,
There is a way to make menus appear on top of the frames of a frameset. The trick is to put the menus and a given iframe in the same file, and then to make the frameset load in the iframe. An illustration is given at:
http://www.let.rug.nl/~molendyk/overbrengen/iframeframe/index.html

There  is one thing that puzzles me. If you put something like:

style="background-image:url(freestylelist/bla.jpg);background-position:0% 10%;background-attachment:fixed;background-repeat:no-repeat;"

in the iframe tag, then Firefox and Mozilla show the background image on top of (in front of) the frames. But IE and Opera don't show the background image. Does anyone have an idea?

PS. Angus, in the above site, I forgot to mention that I use your freestyle menu. But it's only thereto show my problem.

I've since given up hacking framesets; you can use IFRAMEs like that I guess, but with CGI templating so damn easy, why bother?

I guess your tweak does work OK though! Do experiment with CSS positioning a little more especially now that IE7 has been released :).

-  Angus.