need help with javascript error message in IE

When I try to use the editor in IE, I get the error message below.

Also, a big problem is that the editor's control panel/buttons display in Firefox, but not in IE, Netscape, or Opera.

Line: 45
Char: 1463
Error: 'length' is null or not an object
Code: 0
URL: [myurl]/FCKeditor/editor/fckeditor.html?InstanceName=message&Toolbar=Default

NOTE: message is the name= value I've given of the text area

Can I change this value?

Thanks!