Strange Errors on one client

Hi guys,

I've the following problem.

If I call the page with the editor on my pc, there comes two javascript error on line 31.
If I call the demo on http://www.fredck.com/FCKeditor/ there comes NO javascript error. That was very strange for me - and there is also no installation-error from my side, because if I use my notebook, there runs my demo without any errors.

I compared the different settings in the IE 6.0 (both had same nummer of version!) and there is no difference (except the notebook has the MS VM).

Did anyone of you have any problems like this?

Yours Innuendo