Why don't
you use the crossfade functionality from Scriptaculous?
What crossfade in scriptaculous?
You put the two images on top of each other, and fade out the one on
top. This is what is done for the intro on this site
<http://www.spoerli.ch/> for example.
I just thought that this might be a more general bug
in scriptaculous
Not that I know.
Lukas
--
Lukas Renggli
http://www.lukas-renggli.ch