[jQuery] jQuery 1.2 seems to break the Treeview plugin

[jQuery] jQuery 1.2 seems to break the Treeview plugin


I've got a page that is a massive treeview, and when loading jQuery
1.2 min&gzipped, the Treeview plugin seems to stop working. No errors
reported in Firebug, and I can't see deprecated functionality in the
plugin.
Original page with 1.1.4.1: http://deadguy.reliccommunity.com/treeview_1.1.4.1.html
New page with 1.2 min/gzip: http://deadguy.reliccommunity.com/treeview_1.2.html
Any ideas?