Notably, the "position: fixed;"(don't have the spec handy, but I think that's correct) CSS2 style attribute isn't yet supported. I just wanted to officially put in a request for it, as this single feature alone can replace most of the functionality of frames(yippie!).

You may want to implement background-attachment at the same time. See bug 1045. (Then you will be CSS1-property-complete.)

Implementation wise they're not the same, unfortunately, so we won't get background attachments for free. As far as background attachments go, it's not clear reading the spec exactly how they work. It says they're fixed witth respect to the viewport, but what if I have a scrollable DIV and specify a background attachment for it. Is that background fixed wrt the scrollable DIV or the viewport? It would seem more sensible for it to be fixed wrt the scrollable DIV, I would think.

Setting all current Open/Normal to M4.

Created a test case using some code from dbaron@fas.harvard.edu (thank you). Using 3/1 build, verified CSS position: fixed support.