输出是：
          <h1>1 Titel 1</h1>
          <h2>1.1 Titel 2</h1>
          <h3>1.1.1 Titel 3</h1>
          <h3>1.1.2 Titel 4</h1>
          <h1>2 Titel 5</h1>
请高人帮偶看看，应该怎样写出这个XSLT，多谢啦~~~~~

 <xsl:template match="*">
  <xsl:copy>
   <xsl:apply-templates select="@*"/>
   <xsl:apply-templates/>
  </xsl:copy>
 </xsl:template>
 
 <xsl:template match="@* | text() | processing-instruction() | comment()">
  <xsl:copy/>
 </xsl:template>
 
 <xsl:template match="text() [parent::xh:h1 or parent::xh:h2 or parent::xh:h3 or parent::xh:h4 or parent::xh:h5 or parent::xh:h6]">
  <xsl:for-each select="parent::*">
   <xsl:variable name="n0" select="number( substring-after(local-name(.), 'h') )"/>
   <xsl:variable name="n" select="$n0"/>
   <xsl:call-template name="hn">
    <xsl:with-param name="n0" select="$n0"/>
    <xsl:with-param name="n" select="$n"/>
    <xsl:with-param name="s0" select="''"/>
   </xsl:call-template>
  </xsl:for-each>
  <xsl:apply-templates/>
 </xsl:template>
 
 <xsl:template name="hn">
  <xsl:param name="n0"/>
  <xsl:param name="n"/>
  <xsl:param name="s0"/>
  <xsl:choose>
   <xsl:when test="$n>=1">
    <xsl:variable name="hp">
     <xsl:variable name="hn_1_t" select="string(preceding-sibling::* [local-name(.)=concat('h', number($n)-1)] [last()])"/>
     <xsl:choose>
      <xsl:when test="$n=1">
       <xsl:choose>
        <xsl:when test="$n!=$n0">
         <xsl:value-of select="count(preceding-sibling::* [local-name(.)=concat('h', $n)])"/>
        </xsl:when>
        <xsl:otherwise>
         <xsl:value-of select="count(preceding-sibling::* [local-name(.)=concat('h', $n)] )+1"/>
        </xsl:otherwise>
       </xsl:choose>
      </xsl:when>
      <xsl:otherwise>
       <xsl:choose>
        <xsl:when test="$n!=$n0">
         <xsl:value-of select="count(preceding-sibling::* [local-name(.)=concat('h', $n) and preceding-sibling::* [local-name(.)=concat('h', number($n)-1) and .=$hn_1_t ] ] )"/>
        </xsl:when>
        <xsl:otherwise>
         <xsl:value-of select="count(preceding-sibling::* [local-name(.)=concat('h', $n) and preceding-sibling::* [local-name(.)=concat('h', number($n)-1) and .=$hn_1_t ] ] )+1"/>
        </xsl:otherwise>
       </xsl:choose>
      </xsl:otherwise>
     </xsl:choose>
    </xsl:variable>
    <xsl:variable name="s">
     <xsl:choose>
      <xsl:when test="$n=$n0">
       <xsl:value-of select="concat($s0, $hp, ' ', .)"/>
      </xsl:when>
      <xsl:otherwise>
       <xsl:value-of select="concat($hp, '.', $s0 )"/>
      </xsl:otherwise>
     </xsl:choose>
    </xsl:variable>
    <xsl:call-template name="hn">
     <xsl:with-param name="n0" select="$n0"/>
     <xsl:with-param name="n" select="number($n)-1"/>
     <xsl:with-param name="s0" select="$s"/>
    </xsl:call-template>
   </xsl:when>
   <xsl:otherwise>
    <xsl:value-of select="$s0"/>
   </xsl:otherwise>
  </xsl:choose>
 </xsl:template>
</xsl:stylesheet>