I've just been looking at hooking Scriptaculous into APEX.
People are acheving good results with this library and it's getting quite popular. For instance, check out
these demos.
Below are my results. On the plus side, it only took an hour or so from downloading it to getting this up and running. On the downside, it is very buggy in Internet Explorer. I'm glad I don't have to fight with many of these cross browser issues during my day job.
http://apex.oracle.com/pls/otn/f?p=33321:5
Just figured I'd post this in case anyone was interested or in case anyone searches on this in the future!
Ben