Rails spinoffs - Apr 2006 - Drag and Drop ajax Bug in the typo sidebar management under IE6

hi, i have discovered a bug under IE6 and the sidebar management of typo.

you can see the html coda that show the error on
http://www.shoob.com/denis/sidebar_typo/sidebar.html
or download the code locally  with
http://www.shoob.com/denis/sidebar_typo.zip

i''m not able to find what cause the  error so i cannot propose a patch.

The Error is on the onHover method line 698 or 687
Sortable.options(oldParentNode) return null always

Best regards
Lamotte denis