>I don't know which XSLT processor that I have been using?
I can probably tell you which processor you are running if you tell me how you ran the transformation.
Alternatively, use
<xsl:value-of select="system-property('xsl:vendor')"/>
and it will tell you itself.
Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference