Fix wysiwyg textarea in div

Hi I have a page in a CMS that shows specific form fields (including textareas) depending which radio box the user selects. The textarea uses a WYSIWYG editor called WYZZ. The problem I have is that the textarea shows fines and allows edits in IE. However, in firefox and other browsers the textarea shows up in grey as though its been deactivated. I would like this fixed so that the form fields can be completed and submitted to a database. Coders with 9.5 + rating please Thanks Sam