replacements for DAO/MSHTML/MSXML

Hi!

I'm currently looking for a replacement of this components to port a application to linux.

Has anybody already had this problems and how did you solve it? How big are the nessesary changes? Are there components usable for both operating systems with similar functions?

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PS:
I found the Mozilla Active X control at
http://www.iol.ie/~locka/mozilla/mozilla.htm
it should be binary compatible.

Couldn't we use it for implementing shdocvw ???
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Thanks

Juergen