I don't know your XSLT-code exactly, so that I can only recommend you the general way:

<xsl:attribute name="class">
     <xsl:choose>
         <xsl:when test="position() mod 2 = 1">class1</xsl:when>
         <xsl:otherwise>class2</xsl:otherwise>
     </xsl:choose>
</xsl:attribute>

  <tr class="row{position() mod 2}">
    .../...
   </tr>

Eric
--
See you in Seattle.
                                       http://knowledgetechnologies.net/
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Eric van der Vlist       http://xmlfr.org            http://dyomedea.com
http://xsltunit.org      http://4xt.org           http://examplotron.org
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