I posted a half-assed proposal this week, but no reply yet, so I’ll link it here. Basically, it’s all the functionality of background-attachment: fixed but without having it fixed to the viewport and with an additional functionality, namely the level of parent-selecting. My mail is therefore not complete, but it contains a better explanation. It’s “here”:http://lists.w3.org/Archives/Public/www-style/2005Jul/0398.html for those interested.
Oh, my better proposal?
#content h3 { background: url(h3.png) no-repeat anchored(1) } will put the background “anchored” to (0, 0) of #content, not h3. anchored(2) would put it on #content’s parent, etc. etc.