RE: Another Alternate table-row background color quest

stylesheet will extract only some information (filter) from the XML and
create a table. I want the rows in this table to have alternate background
color. Because of the filter condition in the XSL, I cannot use the
position() to check for odd/even rows. I need to (essentially) check the
row number inserted into the HTML <TABLE>.

<xsl:variable name="r">
   <xsl:copy-of select="Codes/Code[Name = 30 ... etc]"/>
</xsl:variable>

<xsl:for-each select="node-set($r)">
   //.. do something with .
</xsl:for-each>

<Codes>
    <Code>
        <Name>10</Name>
        <Description>Decription 10</Description>
    </Code>
    <Code>
        <Name>20</Name>
        <Description> Description 20</Description>
    </Code>
    <Code>
        <Name>30</Name>
        <Description>description 30</Description>
    </Code>
    <Code>
        <Name>40</Name>
        <Description> Description 40</Description>
    </Code>
</Codes>

And here is my stylesheet (it extracts only codes 30, 50 & 60). The output
should contain the first and third rows in one bg color and the second row
in a different color. I tried the position() in this XSL, but it does not
work...