Alternate color regardless from groups

Hi,

I'm grouping a list of rows using the Muenchian  technique, and i try to
output the rows with alternate background-color regardless from groups.

i tryed something like :


 <xsl:key name="group_by_komp" match="row" use="komp" />
...
...

<xsl:for-each select="row[count(.| key('group_by_komp', komp)[1])=1]">
     <xsl:sort select="komp" />


     <xsl:for-each select="key('group_by_komp', komp)">

     ...
     ...

          <xsl:if test="(position() mod 2) = '0' ">
               <xsl:attribute name="background-color">
                    <xsl:value-of select="$row_color_gray"/>
               </xsl:attribute>
          </xsl:if>
     ...
     ...

     </xsl:for-each>

</xsl:for-each>

this doesn't work properly, becouse position() begin at 1 for each group,
so I
get sometimes the same color for the last row of a group and the first one
of the next group.

thanks,

Robert.


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