Alternate implementation on CPAN

If you just can't wait, there is a completely different implementation available from CPAN
by Geert Josten & Egon Willighagen.

Information can be found at:
http://www.sci.kun.nl/sigma/Persoonlijk/egonw/xslt/

The module can be found at:
http://www.perl.com/CPAN-local/modules/by-authors/id/J/JO/JOSTEN/