Finding position of specific element node in nodeset context

How do I construct a variable such that it represents the position of a 
specific element node? Thatis, I‘d like to build an XPath expression that finds 
the relative position of the first “ChapterNumber” that the parser encounters 
when iterating over the last “frontBreak”.  
         
For example, here’s the XML:

<?xml version="1.0"?>
<book>
<section>
<p stylename="docTitle" <string >Lucky</string></p>
<p stylename="FrontMatter" <string>BY </string></p>
…
<p stylename="frontBreak" align="right" fontsize="24"></p>
<p stylename="docAuthor" <string> Joe Smith</string></p>
<p stylename="docTitle" <string >Lucky</string></p>
<p stylename="FrontMatter" <string>BY </string></p>
<--Here’s frontBreak[last()]-->
<p stylename="frontBreak" align="right" fontsize="24"></p>
<p stylename="docAuthor" <string> Joe Smith </string></p>
<p stylename="FrontMatter" <string>BY </string></p>
<!--Here’s ChapterNumber[1]-->
<p stylename="ChapterNumber" <string>1</string></p>
<p stylename=" somethingelse3" <string> text3</string></p>
<p stylename="ChapterNumber" <string>1</string></p>
<p stylename="somethingelse1" <string >text1</string></p>
<p stylename=" somethingelse3" <string> text3</string></p>
…
</section>
</book>

Here’s what my template looks like so far:

<xsl:template match="p[(_at_)stylename='frontBreak']">
<!—Note that I’ve hardcoded $chaptnum_limit, but I would like an Xpath 
expression to replace ‘3’.-->
<xsl:variable name="chaptnum_limit" select="3"/>
    <xsl:element name="div1">
         <xsl:attribute name="n"><xsl:value-of 
select="position()"/></xsl:attribute> 
         <xsl:attribute name="type">front</xsl:attribute> 
             <xsl:element name="head"><xsl:value-of select="node()"/>
    </xsl:element>
   <xsl:for-each select=".">
      <xsl:variable name="frt_br" select="generate-id()"/>
         <xsl:for-each select="following-sibling::p[(_at_)stylename != 
'frontBreak']
            [generate-id(preceding-sibling::p[(_at_)stylename = 
'frontBreak'][1]) = $frt_br]">
                 
                <xsl:if test="position() &lt; $chaptnum_limit">
                      <xsl:value-of select="."/>
                </xsl:if>
           
       </xsl:for-each>
   </xsl:for-each>
   </xsl:element>
 </xsl:template>

I am not sure if this is the right approach (<xsl:if test="position() &lt; 
$chaptnum_limit">), but it was all I could come up with to keep this template 
from providing the values of all <p>’s until EOF when processing 
frontBreak[last()]. Thank you for your help in advance. –shealy


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