The head tag is a universal include (via php) for all the administration pages.
My problem is this: I was using an older 1.x version of FCKeditor. Some pages (lists of content, the main entry for the administrator page etc) DO NOT have the textarea with the ID to be replaced.
With the 1.x version editor, I got no errors. With the latest version, I get a dialogue pop-up that warns me that the textarea is missing (which it is on some pages)
When I get to a page where there is the appropriate textareas, the script works fine.
Can I disable the warning in the lastest version?