IE Issue using UI Sortable with overflow div

IE Issue using UI Sortable with overflow div


I'm trying to use the Sortable feature of jQuery UI, and I've come
across a strange Internet Explorer issue when trying to use a
scrollable div. I tried searching around to see if anyone's had a
similar problem, but didn't come up with anything.
In any event, here's the HTML code I'm using (you'll have to stick
your own jquery javascript in there, sorry. :P ):
http://pastebin.com/m218aef5
IE gives the div a scrollbar but simply ignores the bounds, printing
all of the list entries overtop the div, spilling them onto the rest
of the page.
Is there something elementary that I'm missing?
Thanks!