> <a>
> 	<b ID="b1">...</b1>	
> 	<b ID="b2">...</b1>	
> 	<b ID="b3">...</b1>	
> 	<b ID="b4">...</b1>	
> </a>
> 
> In my stylesheet I have a global param $nodeId defined which 
> gets assigned an ID from an argument sent to the processor, such as "b2".
> 
> I would like to only transform the subtree whose root has the 
> ID stored in $nodeId,

<xsl:template match="/">
  <xsl:apply-templates select="a/b[@ID=$nodeId]"/>
</xsl:template>

Mike Kay


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