Problem passing special characters to editor

I am trying to pass an email address to the default window of the editor
oFCKeditor.Value = 'foo@bar.com' ;

The value shows up in the editor window but when the form is submitted the following error occurs @ symbol is not allowed

If I change this to:
oFCKeditor.Value = 'foo @ bar.com' ;

The error changes to & symbol is not allowed

Removing the @ fixes the problem but this in not an ideal solution.

Any help would be appreciated.

Thanks