Re: collapsing number ranges

  <xsl:choose>
    <xsl:when test="$begin idiv 100 eq $end idiv 100">
      <xsl:value-of select="$end mod 100" />
    </xsl:when>
    <xsl:otherwise>
      <xsl:value-of select="$end" />
    </xsl:otherwise>
  </xsl:choose>

$begin idiv 100 gives you all but the last two digits of $begin. $end
mod 100 gives you the last two digits of $end.