[xsl] Converting a string to a node and changing the scope

["James Shaw" <hertzsprrrung@xxxxxxxxxxx>]

Two newbie questions:

1) I am passing a string as a parameter into a template.  Can I treat the 
string as if it were a reference to a node. e.g.

<xsl:template match="/">
 <xsl:call-template name="foo">
   <xsl:with-param name="mystring">rootNode/myNode</xsl:with-param>
 </xsl:call-template>
</xsl:template>

<xsl:template name="foo">
 <xsl:param name="mystring"/>
 <xsl:value-of select="conversionFunction($mystring)"/>
</xsl:template>

2) I realise that xsl:for-each will change the current scope.  However, if I 
wanted to call a template, but in a different scope, is there a proper way 
of changing the scope?

Thanks in advance,
James Shaw

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