questions. (urgent)

Hi,
	I would hope someone can point me into the right direction doing this. It
has been 5 hours and I still haven't figured out how to do this.
My xml is similar to this:
<persons>
	<group>A</group>
	<person>
		<name>Bob</name>
		<amount>10.00</amount>
		<date>05/13/2003</date>
		<paymentType>CASH</paymentType>
	</person>
	<person>
		<name>Ada</name>
		<amount>20.00</amount>
		<date>05/10/2003</date>
		<paymentType>DEBIT CARD</paymentType>
	</person>
	<person>
		<name>David</name>
		<amount>15.00</amount>
		<date>05/13/2003</date>
		<paymentType>CASH</paymentType>
	</person>
	<person>
		<name>Kenny</name>
		<amount>20.00</amount>
		<date>05/13/2003</date>
		<paymentType>CHEQUE</paymentType>
	</person>
</persons>
<persons>
	<group>B</group>
	...
</persons>

I want an xsl which can produce something as follow:

05/10/2003
	DEBIT CARD
			Ada			20.00
	TOTAL FOR DEBIT CARD		20.00(*)
TOTAL FOR 05/10/2003			20.00(*)

05/13/2003
	CASH
			Bob			10.00
			David			15.00
	TOTAL FOR CASH			25.00(*)

	CHEQUE
			Kenny			20.00
	TOTAL FOR CHEQUE			20.00(*)
TOTAL FOR 05/13/2003			45.00(*)

TOTAL FOR GROUP A				65.00(*)
....

TOTAL FOR ALL GROUP 			sum of all group(*)


I have already got the grouping working correctly with a solution derived
from:
	http://www.dpawson.co.uk/xsl/sect2/N4486.html#d4085e391

However, I can't get the TOTAL working.
Can someone please share some light on how I can get the total (the one with
(*)) using XSLT?

Any help would be appreciated. Thank you.


Kelvin

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