I believe this would be taken care of by setting the ghosting parameter to true in the Sortable.create method call. Check here: http://wiki.script.aculo.us/scriptaculous/show/Sortable.create
Is that what you're talking about?
Ryan
Ah this has been driving me crazy for weeks. I found a forum post somewhere that in ruby on rails spinoffs that suggested creating a droppable on the element then creating the sortable on top, but I had little luck with that method. I'm digging through the code now I'm bound and determined to make it work. Has anyone seen another framework that can do this?