[xsl] finding the parent id of an element in an external XML

Hi,

I'm trying to resolve an external cross-reference, but I want to
display (by chunking up) the division ancestor element and all its contents.
So I know the document, and I know the cross referenced id - I need to
find the id of its ancestor that is a div3. (dont' know how clear that
was)

Here's the XML involved:

-----------
(main doc) lz.xml
-----------

<xref doc="odes" from="l.09" to="l.10">Book of Odes</xref>

-----------

(supporting doc) odes.xml
-----------

<TEI.2 id="odes">
....
<div3 id="d3.27">
<head>LIE WEN</head>

<lg>
<l>...</l>
<l id="l.09">What is most distinguished is being virtuous ; --</l>
<l id="l.10">It will secure the imitation of all the princes .</l>
<l>...</l>
</lg>
</div3>
...
</TEI.2>
-----------


I have the following XSLT:

<xsl:template match="xref">
   <i><a target="new">
     <xsl:attribute name="href">
       <xsl:text>http://localhost:8080/saxon/servlet/SaxonServlet?source=</xsl:text>
       <xsl:value-of select="@doc"/>.xml&#038;style=dynaxml.xsl<xsl:text>&#038;chunk.id=</xsl:text>
       <xsl:choose>
          <xsl:when test="@from">
             <xsl:variable name="dvid">document('../texts/<xsl:value-of select="@doc"/>.xml')//id(@from)/ancestor-or-self::div3[1]/@id</xsl:variable>
             $dvid
          </xsl:when>
          <xsl:otherwise>
                <!-- ... -->
          </xsl:otherwise>
       </xsl:choose>
     </xsl:attribute>
     <xsl:apply-templates/>
   </a></i>
</xsl:template>
-----------

I can't get the variable dvid to resolve. I know I'm missing something
really simple here, but I'm new to XSLT and am having problems
figuring it out.

Any help would be great.

Thanks,

----- 
- Cindy  

Cynthia L. Mazza
mailto:clm6u@xxxxxxxxxxxx


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[xsl] finding the parent id of an element in an external XML document