Copy and paste unreadable characters

We have a web page where application users are coping and pasting some
text from WordPerfect or MS Word. We have noticed some of the
characters are unreadable. These characters have special formating on
them from the word processing application. For instance one has the
Trademark symbol which is a small tm but contains some special
formating. When this is pasted it doesn’t render correctly as the
browser doesn’t understand the character. We are using IE 6.0.2.
Also they have double quotes that when pasted are very different then
if I typed them in. I am looking for some javascript code that could
replace this or stip it out. Does anyone know of a regular expression
that might do this? Or maybe an alternative idea?

Thanks in Advance,
Tom

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