[xsl] namespaces and xmlns=""

["tom tom" <tomxsllist@xxxxxxxxxxx>]

Hi all, can someone explain why the following XML and XSLT produces an 
xmlns="" attribute on the image tag in the output. I am using MSXML4

XML:
<root/>

XSLT:
<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; 
xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:local="#local-functions" 
xmlns:s="urn:schemas-microsoft-com:xml-data" 
xmlns:dt="urn:schemas-microsoft-com:datatypes" 
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"; 
xmlns:dc="http://purl.org/dc/elements/1.1/"; exclude-result-prefixes="msxsl 
local s dt rdf">

<xsl:variable name="rss_rdf_resource_image">
<xsl:element name="image">
<xsl:attribute name="rdf:resource">/images/logo042.gif</xsl:attribute>
</xsl:element>
</xsl:variable>
	<!--

	-->
<xsl:template match="root">
<rdf:RDF xmlns="http://purl.org/rss/1.0/"; 
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"; 
xmlns:dc="http://purl.org/dc/elements/1.1/"; 
xmlns:image="http://purl.org/rss/1.0/modules/image/";>
<channel rdf:about="http://about.about.com/";>
<title>Recently Edited Articles</title>
<link>http://about.about.com/dfgdsf</link>
<description>Recently Edited Articles</description>
<dc:date>2005-11-29T10:16+03:00</dc:date>
<xsl:copy-of select="$rss_rdf_resource_image"/>
</channel>
</rdf:RDF>
</xsl:template>
</xsl:stylesheet>

Output:

<rdf:RDF xmlns:dc="http://purl.org/dc/elements/1.1/"; 
xmlns="http://purl.org/rss/1.0/"; 
xmlns:image="http://purl.org/rss/1.0/modules/image/"; 
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";>
<channel rdf:about="http://about.about.com/";>
<title>Recently Edited Articles</title>
<link>http://about.about.com/dfgdsf</link>
<description>Recently Edited Articles</description>
<dc:date>2005-11-29T10:16+03:00</dc:date>
<image rdf:resource="/images/logo042.gif" xmlns=""/>
</channel>
</rdf:RDF>

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