[rt-users] Self service error on page IE 6

[Monti gmail]

Hi all and season's greetings.

I have a customer which uses the Self Service HTTP interface using IE 6.0
The customer complains he cannot see the "issue description" text box
when trying to submit new issue.
he gets error on page with the following:

Line: 124
Char: 2
Error: Object expected
Code:0
URL: http://Server.URL/NoAuth/RichText/editor/fckeditor.html?InstanceName=Content&Toolbar=Default

It is working fine with IE7 and FF 3.0

any ideas how to fix it?