"G.getFirst().hasAttribute is not a function"

[SunboX]

Im using CKEditor 3.5.1 together with mootools 1.3 (on the same page).

I get an error "G.getFirst().hasAttribute is not a function". I have formated ckeditor.js:

​http://jsfiddle.net/LFDQD/

Now i get the right line:

Line: 11912

if I rewrite this line with:

if (!H

H == 1 && G.getFirst().hasAttribute && G.getFirst().hasAttribute('_moz_editor_bogus_node')) {

all works great.

I´m using Firefox 3.6.13 on Windows Vista

[Jakub Ś]

Any chance for a reduced test case file showing the problem?
Can this be reproduced only with mootools and CKEditor but without your application?