CSS Sanitizer?

[eluser]dmorin[/eluser]
Anyone know of a library that will sanitize CSS to remove javascript and other things that could be a security risk? It looks like HTMLPurifier does at least some and this ruby code would be fairly trivial to port:

http://github.com/courtenay/css_file_san...anitize.rb

Just wondering if anyone has anything they've used before and thought was good. Thanks.