Accessing a variable defined in the parent node

Hi all...

If I have

<xsl:template match="direcciones">
  <xsl:param name="source" />
  <xsl:apply-templates select="ROWSET" />
</xsl:template>

<xsl:template match="direcciones/ROWSET">
  <!-- I want to access here "source" variable without the need of re-passing 
it as parameter -->
</xsl:template>

How can I do it?

Thanks
Jaime

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