Column Calculations

column-calcs.xslt

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
  version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:umb="urn:umbraco.library"
  exclude-result-prefixes="umb"
>

  <xsl:output method="xml" omit-xml-declaration="yes"/>
  <xsl:param name="currentPage"/>

  <!-- get Columns - Laurie, 9th March 2012   -->

  <xsl:template match="/">
    
    <xsl:apply-templates select="$currentPage/child::* [@isDoc]" />
       
  </xsl:template>

  <xsl:template match="*">
    <div xsl:use-attribute-sets="better-magic">
      <section class="grid-easy">
        <xsl:value-of select="contentBody" disable-output-escaping="yes" />
        <xsl:if test="self::News">
          <h1><xsl:value-of select="contentHeader" /></h1>
          <xsl:apply-templates select="child::NewsArticle" />
        </xsl:if>
      </section>
    </div>
  </xsl:template>
      
  <xsl:attribute-set name="better-magic">
    <xsl:attribute name="class">
      <xsl:variable name="column-count" select="count(parent::*/* [@isDoc])" />
      <xsl:choose>
      <xsl:when test="$column-count = 1">grid_6 alpha omega</xsl:when>
      <xsl:when test="$column-count = 2">
        <xsl:if test="position() = 1">grid_4 alpha</xsl:if>
        <xsl:if test="position() = 2">grid_2 omega</xsl:if>
      </xsl:when>
      <xsl:when test="$column-count &gt; 2">
        <xsl:text>grid_2 </xsl:text>
        <xsl:choose>
          <xsl:when test="position() mod 3 = 1">alpha</xsl:when>
          <xsl:when test="position() mod 3 = 0">omega</xsl:when>
        </xsl:choose>
      </xsl:when>
    </xsl:choose>
    </xsl:attribute>
  </xsl:attribute-set>
  
  <xsl:template match="NewsArticle">
    <article>
      <xsl:value-of select="contentTeaser" disable-output-escaping="yes" />
    </article>
  </xsl:template>


</xsl:stylesheet>

It all works and has context. But I'm sure it could be more graceful.
I'll check exactly why it has context, but it certainly does. Lau (: