[docbook-apps] Antenna House XSLFormatter and internal links (xref)

[Marco Baumgartl <Marco_Baumgartl at yahoo dot de>]

Hallo,

I use XSLT to convert HTML (from a CMS) to DocBook. This seems to work 
great so far. I can produce HTML, HTML Help and PDF (with Apache's FOP 
renderer) using my created DocBook file.
Today I tried an another renderer (evaluation version of XSLFormatterV3 
from Antenna House, Version 3,2,2005,0111 MR2). I noticed that my way of 
creating links does not work with this renderer (but with FOP it does).
Here is the part of my stylesheet that produces the link:

<xsl:template match="a">
  <xsl:if test="@href">
    <xsl:choose>
      <xsl:when test="starts-with(@href, 'http') or starts-with(@href, 
'ftp') or starts-with(@href, 'mailto')">
        <ulink url="{@href}"><xsl:value-of select="." /></ulink>
      </xsl:when>
      <xsl:otherwise>

<!-- insert a dummy element (i.e. anchor's text child produces no 
output) we can use to refer to in xref's attribute 'endterm' (to produce 
some output) -->

        <anchor>
          <xsl:attribute name="id">
            <xsl:value-of select="generate-id(@href)" />
          </xsl:attribute>
          <xsl:value-of select="." />
        </anchor>

        <xref>
          <xsl:attribute name="linkend">
            <xsl:value-of select="substring-after(@href, '#')" />
          </xsl:attribute>
          <xsl:attribute name="endterm">
            <xsl:value-of select="generate-id(@href)" />
          </xsl:attribute>
        </xref>

      </xsl:otherwise>
    </xsl:choose>
  </xsl:if>
  <xsl:if test="@name">
    <xsl:value-of select="text()" />
    <anchor>
      <xsl:attribute name="id">
        <xsl:value-of select="@name" />
      </xsl:attribute>
    </anchor>
  </xsl:if>
</xsl:template>

I use a dummy anchor element to create a (hidden) output which I can 
refer to in xref's endterm attribute. As I mentioned before, this 
solution works well with FOP, but the XSLFormatter does nothing if I 
click on an internal link (external links (ulink) work fine).

I don't know what the problem is or where to look for a solution.

Can anybody give me a hint?

regards
Marco

PS: The files are transformed with Saxon 6.5.3 (JDK 1.4.2-06) and 
DocBook stylesheets 1.68.1 under Win2000.