Visual glitches in IE around sortable lists

Visual glitches in IE around sortable lists


Hello,
I'm not too sure whether I should post this here or on a IE
development website...
I have a <ul> list sortable connected with an <ol> list (sortable as
well). The idea is to be able to drag unordered items in the first
list and order them by dropping them in the second list.
In FF my code is running without a hitch, but in IE I experience
visual glitches (text dissapearing above the two lists, background
color being painted over the container div along the path followed by
the list item, ...)
One example is worth a thousand words, so here it is :
http://quentin.dugauthier.net/f1/test2lists.php
Do you think it is linked with jQuery, my CSS or the pore IE
javascript support ?
Thanks in advance for your help.
KR,
Quentin.