RE: Determining last node

Send button pressed too early: add "[1]" after all *::chapter.
Also another minor syntax error fixed:

 <xsl:template match="call:insert[@id='NavbarDesktop']">
   <xsl:param name="chapter"/>
   <xsl:param name="chNum"/>
   <xsl:text>[ </xsl:text>
   <xsl:if test="$chapter/preceding::chapter[1]">
     <a href="chap{$chNum-1}.html">
        <xsl:value-of select="$chapter/preceding::chapter[1]/title"/>
     </a>
     <xsl:text> | </xsl:text>
   </xsl:if>
   <a href="index.html">Table of Contents</a>
   <xsl:if test="$chapter/following::chapter[1]">
     <xsl:text> | </xsl:text>
     <a href="chap{$chNum+1}.html">
        <xsl:value-of select="$chapter/following::chapter[1]/title"/>
     </a>
   </xsl:if>
   <xsl:text> ]</xsl:text>
 </xsl:template>

Still untested.

Further notes: If you aim for purity, replace the chNum parameter
by count(chapter::preceding::chapter)+1, this may degrade performance,
however.
If your chapters are actually all siblings (as they are in the DocBook
DTD) and not nested somewhere else, replacing preceding::chapter by
preceding-sibling may increase performance a bit. Assigning
$chapter/preceding::chapter[1] etc. to a variable might help improving
performance for processors which are bad at CSE.

J.Pietschmann

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