JavaScript Error in Content Editor Web part while entering text (MOSS 2007/WSS 3.0)

If your version of MOSS installation is below 12.0.0.6335 (December 16 2008 Hotfix), you might receive the following JavaScript error for every key stroke while you are trying to edit a Content Editor Web Part.

There are some blogs that suggest a possible fix by copying a LAYOUTS\1033\FORM.JS and LAYOUTS\1033\BFORM.JS from a working server. (http://blog.mastykarz.nl/javascript-error-while-entering-text-in-the-content-editor-web-part/ Thanks to Waldek Mastykarz for this great workaround) But the problem was I did not have a machine where this functionality was working.

But took the benefit of latest December 16th 2008 Hotfix for MOSS 2007 and WSS 3.0 and after installing the hotfix, the issue seems to be resolved.

Refer below link for the latest hotfixes.

http://blogs.msdn.com/josrod/archive/2008/12/17/latest-wss-and-moss-patches.aspx