Re: sorting into a tree structure

I'd like to limit the number of levels that the tree goes down.
What's the best way of achieving this?  Is this through
count(ancestor::*)?

    <xsl:template match="folders">
        <ul>
          <xsl:apply-templates select="key('val', '')">
            <xsl:with-param name="level" select="1"/>
          </xsl:apply-templates>
        </ul>
    </xsl:template>

    <xsl:template match="Item">
        <xsl:param name="level"/>
        <xsl:choose>
            <xsl:when test="key('val', @ID) and $level &lt;= $max-level">
                <li><xsl:value-of select="@title"/></li>
                <ul>
                  <xsl:apply-templates select="key('val', @ID)">
                    <xsl:sort select="@order" data-type="number"/>
                    <xsl:with-param name="level" select="$level + 1"/>
                  </xsl:apply-templates>
                </ul>
            </xsl:when>
            <xsl:otherwise>
                <li><xsl:value-of select="@title"/></li>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:template>

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/