RE: Optional namespace declaration in XML document

> Is there any way to have one XSLT 1.0 stylesheet handle 
> situations where the XML input has different namespace 
> declarations? 

My preferred approach to this is to write a two pass transformation. The
first part moves the data into the "correct" namespace, the second part does
the real transformation. This is much easier and cleaner than trying to
transform data which can arrive in a variety of forms.

Michael Kay
http://www.saxonica.com/