Summing multiple attributes

> Hi all,
> 
> I created a table based on the XML below, that has the following columns:
> item, color, count, unitcost and sub-total (count*unitcost).  The part I'm
> having a problem with is calculating the total (i.e. sum of all sub-totals
> in a table, for a member) for the table.   I have put a subset of the XML
> below as well as a sample of what the output should look like.  The part I
> can't get is the last line of the sample output.  
> 
> I have been trying to use a recursive named template, but to no avail.  I
> have found several examples of summing one element or attribute using the
> sum method.  However, when I try to sum the product of count*unitcost, I
> get an error because the result is not a nodeset.  
> 
> Any help would be appreciated.  
> 
> XML:
> <?xml version="1.0"?>
> <?xml-stylesheet type="text/xsl" href="demo.xsl"?>
> </members>
> 	<member level="gold">
> 		<name>john smith</name>
> 		<phone type="home">555-5457</phone>
> 		<phone type="work">445-8524</phone>
> 		<phone type="cell">897-4684</phone>
> 		<street>124 pulse</street>
> 		<city>new york</city>
> 		<state>ny</state>
> 		<zip>05644</zip>
> 		<items>
> 			<item title="shirt" color="Purple" count="2"
> unitcost="24.95"/>
> 			<item title="sport socks" color="white" count="2"
> unitcost="12.95"/>
> 		</items>
> 	</member>
> 	. . .
> </members>
> 
> Sample Output:
> Item		Color	Count	UnitCost	SubTotal
> shirt		Purple	2	24.95		49.90
> sport socks	white	2	12.95		24.90
> Total						74.80
> 
> Mike Muse
> mike.muse@xxxxxxxxxx


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