How to build a drill-down list from XML using XSL?

Here's a snippet of my XML data file:

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="channel.xsl"?>
<Table>
	<Partner>
		<Type>HVAC</Type>
		<Division>Chatham</Division>
		<ChannelRep>John</ChannelRep>
		<Name>ABC Heating</Name>
	</Partner>
	<Partner>
		<Type>HVAC</Type>
		<Division>Chatham</Division>
		<ChannelRep>John</ChannelRep>
		<Name>DEF Heating</Name>
	</Partner>
	<Partner>
		<Type>Retail</Type>
		<Division>London</Division>
		<ChannelRep>Joe</ChannelRep>
		<Name>XYZ Hardware</Name>
	</Partner>
</Table>

I want to display this like:

HVAC
 |
 --Chatham
    |
    -- John
        |
        --ABC Heating
          DEF Heating
Retail
 |
 --London
    |
    -- Joe
        |
        --XYZ Hardware

so I want to use nested HTML <UL> tags, but I don't know how to only show
HVAC and Retail only once, etc.  right now I got this as my XSL:

<?xml version='1.0'?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/TR/WD-xsl";>
	<xsl:template match="/">
	<HTML>
	<BODY>
	<xsl:for-each select="Table/Partner"
order-by="Type;Division;ChannelRep">
		<UL><xsl:value-of select="Type"/>
			<UL><xsl:value-of select="Division"/>
				<UL><A>
				<xsl:attribute name="href">
	
http://W1116207/channel/echo.asp?value=<xsl:value-of select="Name"/>
				</xsl:attribute>
				<xsl:attribute
name="target">view</xsl:attribute>
				<xsl:value-of select="Name"/>
				</A></UL>
			</UL>
		</UL>
	</xsl:for-each>
	</BODY>
	</HTML>
	</xsl:template>
</xsl:stylesheet>

which will show:

HVAC 
	Chatham 
		ABC Heating 
HVAC 
	Chatham 
		DEF Heating 
Retail 
	London 
		XYZ Store 


Please help if you can, thanks!


Joseph Tam
Application Development Specialist
Union Gas Ltd.
Tel: 519-436-4600 ext 2735
Fax: 519-436-5263
Email: jtam@xxxxxxxxxxxx


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list

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