I can't speak to the result you are getting in IE4 as I have never used it. I can see what you are talking about though when you click on the translate button. It looks like the page is being served up through a Google API when you do this. In order for this to work you may need to update links to your css to be absolute web URLs instead of relative paths.
So you can change any links to the CSSMenWriter folder to be fully qualified like this:
If that is the path to the folder on your site. I think if you had it updated like this you may get a better result.