<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xalan="http://xml.apache.org/xalan"
exclude-result-prefixes = "xalan">

<xsl:output method="text" indent="yes" />
<xsl:variable name="old_file" select="/*"></xsl:variable>
<xsl:param name="secondFile"></xsl:param>
<xsl:variable name="new_file" select="xalan:nodeset($secondFile)/*"></xsl:variable>

	<xsl:template match="/">
		Parameter secondFile is set as
		<xsl:value-of select="$secondFile"/>

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/