accessing Java method from xslt

I searched the archives and only found one example of this and it does not really apply.  I am hoping someone here can help me out on this one.  I am new to XML but not really new to Java.
I am trying to access a method in a java file from my xslt.  Below is a snippit of my xml file. 

<myxml>
<RelatedId>Test11-Diagram</RelatedId>
</myxml>


Here is a snippit of my xslt file...

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
       xmlns:CollateralXML="class:../classes/xml/CollateralXML">

<xsl:template match="myxml">
<xsl:output method="html"/>
<xsl:apply-templates select="RelatedId" />
</xsl:template>

<xsl:template match="RelatedId">
	<B>Categories:</B><br/>
		<xsl:value-of select="CollateralXML:getUrl(.\),
		<br/>
</xsl:template>


I am not sure what to put in the getUrl.  I need the value of Test11-Diagram to be sent to the method in CollateralXML called getUrl. The method getUrl is static.
The only example I have run across has the values embeded in the tag and that is not the format I have avail to me.
Any help is appreciated.







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