BUG (?) for FF:

oh, the function causing the problem is:

L40: FCK.MakeEditable=function(){
L41: this.EditorWindow.document.designMode='on';
L42: this.EditorWindow.document.execCommand('useCSS',false,!FCKConfig.GeckoUseSPAN);};

if I comment out L41, then L42 throws the same error type just with a different text...

ok, found something else out: The editor is in a <DIV> layer which is first set to hidden.

<div id="layer_html" style="visibility: hidden; display: none;">

I then focus on that layer using following link:

<a href="javascript:show_editbox('html');">HTML Mode</a>

If I click on that link before the line loads, fckeditor displays correctly. If I wait, then the JS error is called. Perhaps this is a bug-report more than a help-request ? If anyone has a solution please let me know.