transform a string

hello,

within a xsl template I need to transform a physical path like
file:///D:/usr/jan/My Documents/Visual Studio
Projects/Web/Data/XmlContent/Development/TaskSheet.xml
to 
/Development/Tasksheet.aspx

I tried
<xsl:param name="baseDir" select="'file:///D:/usr/jan/My
Documents/Visual Studio Projects/Web/Data/XmlContent/'"/>

	<xsl:template match="site:document">
		<site:document>
			<site:xml-file>
				<xsl:value-of select="site:xml-file"/>
			</site:xml-file>
			<site:link>
				<xsl:value-of select="translate(string(site:xml-file), $baseDir, '')"/>
			</site:link>
		</site:document>
	</xsl:template>

but keep getting strange, scrambled results...

thanks for the help

-- 
Jan
http://www.limpens.com

Otakoo Saloon Cartoon - newest episode at http://limpens.com/oscredirect