[xsl] Mapping from two sources (~ inner join in DB)

Subject: [xsl] Mapping from two sources (~ inner join in DB)
From: sudheshna iyer <sudheshnaiyer@xxxxxxxxx>
Date: Sun, 3 Oct 2010 11:56:27 -0700 (PDT)
Team,

For the below question, I got the answers from you using <xsl:for-each-group>. But my version of XSLT is not supporting xsl:for-each-group. 

Is there a different way of implementing this? 
=======
I need to have two sources:

input1 and input2. 

input1:
<?xml version="1.0" encoding="ISO-8859-1"?>
<Order>
	<OrderLine>
			<OLN>1</OLN>
			<Fname>aa</Fname>
	</OrderLine>
	<OrderLine>
			<OLN>2</OLN>
			<Fname>bb</Fname>
	</OrderLine>	
</Order>


input2:
<?xml version="1.0" encoding="ISO-8859-1"?>
<POOrder>
	<POOrderLine>
			<OLN>1</OLN>
			<ID>123</ID>
			<LName>aa</LName>
	</POOrderLine>
	<POOrderLine>
			<OLN>2</OLN>
			<ID>324</ID>
			<LName>bb</LName>
	</POOrderLine>	
	<POOrderLine>
			<OLN>3</OLN>
			<ID>456</ID>
			<LName>bb</LName>
	</POOrderLine>	
</POOrder>

I need the output from both sources combined. Please note that first two elements are coming from input1 and thrid element is from input2. What is the 
optimal way of doing this?

<?xml version="1.0" encoding="ISO-8859-1"?>
<OrderResponse>
	<Oline>
		<OLN>1</OLN>
		<Fname>aa</Fname>
		<ID>123</ID>
	</Oline>
	<Oline>
		<OLN>2</OLN>
		<Fname>bb</Fname>
		<ID>324</ID>
	</Oline>
</OrderResponse>

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