[xsl] help with select

["Jiang, Peiyun " <Peiyun.Jiang@xxxxxxxxxxxxxx>]

I'm trying to made the following code work:
./footnote|//footnote[@id=./@fnref]

I want to select the child footnote element of author and any footnote that
its id attribute matches the fnref attribute of the author.

In footnote[@id=./@fnref], is "." referring to author or to footnote? How do
you refer author?

Thanks.

Peiyun


<xsl:template match="author">
    <!-- something here -->
	     <xsl:choose>
	     <xsl:when test="count(./footnote|//footnote[@id=./@fnref]) = 1">
	        <xsl:apply-templates select="./footnote|//footnote[@id=./@fnref]"/>
	     </xsl:when>

	     <xsl:when test="count(./footnote|//footnote[@id=./@fnref]) &gt; 1">
	        <xsl:for-each select="./footnote|//footnote[@id=./@fnref]">
	            <xsl:choose>
	               <xsl:when test="position() = last()">
	                  <xsl:apply-templates select="." />
	               </xsl:when>
	               <xsl:when test="position() != last()">
	                  <xsl:apply-templates select="." />
	                  <sup>,<xsl:text>&#x20;</xsl:text></sup>
	               </xsl:when>
	            </xsl:choose>
	        </xsl:for-each>
	     </xsl:when>
	     </xsl:choose>

  <!-- some other things here -->
</xsl:template>