CSS specs 10.1 Some definition should be defined according to WINDOW = viewport If the element has 'position: fixed', the containing block is established by the viewport = window - I have written about the problem in www.nic.fi/~tapio1/Opera/CSS-2.hmtl test using my art pages - they have background attachment fixed - and only IE 4.01/5.0 keeps it fixed! Even if Microsoft always calculate background according to window, it handle hower right the value FIXED IE 5.0 does this - no other CSS supporting browse - Opea and Mozilla scroll As you see, ALL CSS supporting browsers displays backgrounds incorrectly!

We support both fixed background attachment and fixed placement just fine to the best of my knowledge. The URL quoted in this bug is non-functional.