[jQuery] JQuery - CrossBrowser? - Script not working in Firefox

[AtlantaGeek]

With JQuery supposedly crossbrowser capable, I did not think the
script I'm using would have any issues in Firefox.  Dumb thought,
perhaps.  It doesn't seem to execute at all in Firefox.  It's the
AutoCompleter located at 
http://www.pengoworks.com/workshop/jquery/autocomplete.htm.
It's working well in IE7, but not in Firefox.  Are there any
additional requirements to get JQuery working in Firefox?