[xsl] Namespaces best practice in XML

["tom tom" <tomxsllist@xxxxxxxxxxx>]

My XML Source has a default namespace and never uses prefixes. I am writing 
a stylesheet which  transforms this into XHTML. In the XSLT I (ideally) 
never want to prefix any XHTML output elements or any source XML element 
references.

What would you advise my default namespace in the XSLT file should be?

Do I need to declare the XHTML namespace + my source XML's namespace?

I am looking for a best-practice / future proof method way to do this.

Thanks

Tom

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