How to italicize citetitle in end notes in XSL FO?

Dear friends,

I have successfully customized my XML FO style sheet for footnotes to get end 
notes, as documented in Bob Stayton's book DocBook XSL:

http://www.sagehill.net/docbookxsl/Endnotes.html

All works fine, and I'm pleased with the output, with one exception.  The 
content within a 'footnote' tag that is tagged with 'citetitle' (mainly book 
titles) does not get italicized.  I have attempted to customize the footnote 
properties to deal with this, as follows:

   <xsl:attribute-set name="footnote.properties">
     ...
     <xsl:attribute name="font-style">
       <xsl:call-template name="citetitle.fontstyle"/>
     </xsl:attribute>
     ...
   </xsl:attribute-set>

     <xsl:template name="citetitle.fontstyle">
       <xsl:choose>
         <xsl:when test="d:citetitle">
           <xsl:value-of select="italic"/>
         </xsl:when>
         <xsl:otherwise>
           <xsl:value-of select="normal"/>
         </xsl:otherwise>
       </xsl:choose>
   </xsl:template>

I've tried many other variations of this, with no luck. Does anyone have any 
suggestions?

Appreciatively yours,

Robert Mackay
Ocean Droplets