problem generating dynamic namespace declarations

Hi,
I'm writing a stylesheet that generates XML Schema documents, which
requires a namespace declaration that I want to assign via stylesheet
parameters.  I've tried the following, but it doesn't work:

<xsl:param name="prefix" select="gen"/>
<xsl:param name="targetNS"/>

<xsl:template match="/">
  <schema xmlns = "http://www.w3.org/1999/XMLSchema">
    <xsl:attribute name="xmlns:{$prefix}"><xsl:value-of
select="$targetNS"/></xsl:attribute>
    <xsl:attribute name="targetNamespace"><xsl:value-of
select="$targetNS"/></xsl:attribute>

The Saxon processor complains that "xmlns:" prefix has not been
declared.  Then, I see in Michael Kay's XSLT book that the XSLT spec
prohibits using 'xmlns:' within the QName of the <xsl:attribute>
element.

Any suggestions on how to do this?

Thanx!
  Dave Carlson


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