zeeb44 — 2011-09-16T13:52:43-04:00 — #1
gar_onn — 2011-09-16T14:33:45-04:00 — #2
the backgrounds are DIV's positioned fixed (or absolute)
and the TOP position (and LEFT) is changed depending on the scroll position.
just go to one of those websites and view (steal) source
zeeb44 — 2011-09-16T14:37:03-04:00 — #3
See every time I view source on one of those websites it looks like there is java script controlling it. I cant even remember one of the sites off the top of my head. Let me look for one.