parsing ECB xml file

hello i am fairly new to xml and i am trying to
implement a currency converter using rates which are
updated regularly. I've found an xml document produced
by the ECB,
http://www.ecb.int/stats/eurofxref/eurofxref-daily.xml
, but i am having problems extracting values of the
attributes of the 'Cube' elements from the file.. what
am i doing wrong?
The following is a simple xsl script which i tried.
=================
<?xml version="1.0" encoding="UTF-8"?>

<xsl:stylesheet version="1.0"
               
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
               
xmlns:gesmes="http://www.gesmes.org/xml/2002-08-01"
               
xmlns="http://www.w3.org/TR/xhtml1/strict"> 

	<xsl:output method="html" />
	<xsl:template match="/">
		<xsl:for-each select="gesmes:Envelope/Cube/Cube">
			<xsl:value-of select="Cube/@currency"/>
		</xsl:for-each>

	</xsl:template>
</xsl:stylesheet>
================

i can successfully exctract the contents of the
'gesmes:subject' and 'gesmes:name' elements however.

Any answers?		

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