[xsl] Conditional Summation

["Katie McNally" <kmcnally9 at hotmail dot com>]

I am transforming XML to HTML.  I am trying to sum up values.  I need to 
display two totals.  The first total is the Total Assets (amounts) for the 
primary borrower (Rank = 1).  The second total is the Total Assets (amounts) 
for the secondary borrower (Rank = 2).  What should my xsl look like in 
order to sum up the "Amount" values for the borrower with Rank = 1?  (The 
same question would apply to summing the "Amount" values for borrower with 
Rank = 2).

I want to display:

Kelly Smith
Total Assets:  $1100

John Smith
Total Assets:  $400

A simplified version of my xml is:

<Loan>
<Borrower>
	<FirstName>Kelly</FirstName>
	<LastName>Smith</LastName>
	<Rank>1</Rank>
	<AssetSet>
		<Asset>
			<Amount>500</Amount>
		</Asset>
		<Asset>
			<Amount>600</Amount>
		</Asset>
	</AssetSet>
</Borrower>
<Borrower>
	<FirstName>John</FirstName>
	<LastName>Smith</LastName>
	<Rank>2</Rank>
	<AssetSet>
		<Asset>
			<Amount>100</Amount>
		</Asset>
		<Asset>
			<Amount>300</Amount>
		</Asset>
	</AssetSet>
</Borrower>
</Loan>

Thanks,
Katie


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