[xsl] round-robin template call

Hi,

I'm having difficulty figuring out how to perform something in XSLT 1.0. 
 I want to be able to call a template at random points in an XSLT 
document, and each time the template is called it outputs a different 
version of a node.  Example:
<xsl:stylesheet>
<xsl:template match="/">
        <output>
                <xsl:call-template name="makenode"/>
                <tagX>data</tagX>
                <tagY>data</tagY>
                <xsl:call-template name="makenode"/>
        </output>
</xsl:template>
<xsl:template name="makenode">
        <xsl:choose>
                <xsl:when test="oddcalls()">
                        <tagA type="odd">data</tagA>
                </xsl:when>
                <xsl:when test="evencalls()">
                        <tagA type="even">data</tagA>
                </xsl:when>
        </xsl:choose>
</xsl:template>
</xsl:stylesheet>

Obviously variables and parameters can't be altered once declared, and I 
can't think of a way of doing this with a recursive template.
Any ideas?


Thanks,
Aragon


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