How can I add another chunk navigation link?

I would like to add one more link to the chunk
navigation.  This link
would link to a PDF version of the current page. 
Here's what I have
in my local stylesheet

<?xml version='1.0'?>
<xsl:stylesheet
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">

<xsl:import
href="/usr/share/sgml/docbook/xsl-stylesheets/html/chunk.xsl"/>
                                                      
               
                                                      
               
                      ...
<xsl:template name="user.footer.navigation">
                  <a accesskey="n">
                    <xsl:attribute name="href">
                      <xsl:call-template
name="href.target">
                        <xsl:with-param name="object"
select="."/>
                      </xsl:call-template>
                    </xsl:attribute>
                    <xsl:call-template
name="navig.content">
                      <xsl:with-param name="direction"
select="'PDF'"/>
                    </xsl:call-template>
                  </a><BR/>
</xsl:template>
                                                      
               
                                                      
               
                      </xsl:stylesheet>

This results in this HTML ...

<a accesskey="n" href="index.html"><img
src="../images/PDF.gif" alt="xxx">

... which is fine expect that I can't figure out how
to get the HTML to look like this ...

<a accesskey="n" href="index.pdf"><img
src="../images/PDF.gif" alt="xxx">

Thanks!



		
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