number formatting....

Hi there,
I have two sibling subtree's. And I have to produce a master-detail form of
representation. 
Its like an Inner FOR Loop in an outer FOR Loop. 

eg:
<xsl:for-each select="//number1">
	<xsl:number value="position()" format="1."/>
	<xsl:value-of select="@N1Key"/>
	<xsl:value-of select="@Name"/>

	<xsl:variable name="varKey" select="@N1Key"/>
		
	<xsl:for-each select="ancestor::*/number2">
		<xsl:if test="$varKey = @N2Key" >
			<xsl:number format="a."/>
			<xsl:value-of select="@BKey"/>
			<xsl:value-of select="@Qty"/>
		</xsl:if>
	</xsl:for-each>
</xsl:for-each>

/* ******************************* */

Now in the inner FOR Loop, the number format produces the actual position
sequence, which I dont want in this case. I want the numbering to be related
to the inner FOR Loop number. i.e. should start with "a." every time it
enters the FOR Loop the first time....

Output:
	1.	Key1	Name1
	a.	RKey1	Qty1
	b.	RKey2	Qty2
	c.	RKey3	Qty3
	2.	Key2	Name2
	a.	RKey6	Qty6
	b.	RKey9	Qty9
.....

Is there any way, I can achieve this sequence....

Thanx in advance,
Saif Khaja



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