CKEditor not showing

I don't get CKEditor showing, even not in the _samples directory.
Strange enough, offline it shows CKEditor, but after putting the files online it doesn't anymore.
The demo at ckeditor.com and other sites who use CKEditor do work properly.
So there has to be a problem by putting the files online. Though I've checked all of the files offline and online and there's no difference. Everything stays online and I haven't changed anything yet.
Maybe the problem will be caused by the fact that I've put the directory like this:
http://www.domain.ext/dir1/dir2/ckeditor/ in stead of http://www.domain.ext/ckeditor/?
Kind regards for helping me!

Screenshots




Environment settings
OS: Mac OS X v10.6
Internet: Firefox, Chrome and Safari
Works:
- offline: YES
- online (ckeditor.com): YES
- online (domain): NO
Server domain: Linux (php+mysql)
Installed: JQuery