How to use copy-of with variable? (RE: How to code XSL to display two XML elements side by side?)

Subject: How to use copy-of with variable? (RE: How to code XSL to display two XML elements side by side?)
From: "Xu, Xiaocun" <XXu@xxxxxxxxxxxxxxxxxx>
Date: Tue, 27 Jun 2000 15:29:10 -0400
> > How can I code XSL to combine the two XML elements, display one
> > in the left and one in the right columns in the <table> element?  
> No magic here, just
> <td><xsl:value-of select="soldto/lastname"/></td>
> <td><xsl:value-of select="shipto/lastname"/></td>
> and so on.

Thanks Mike :)  That's exactly what I needed here :)
> > 	Another question, I need to reuse the ShipTo info to 
> > reprint it at bottom of the HTML.  How can I code XSL so that I can
> > reprint ShipTo info at bottom of the HTML page?
> > 
> Several possibilities:
> (a) just access the data a second time, using "pull" logic 
> (xsl:for-each, xsl:value-of)
> (b) process the data using xsl:apply-templates ("push" logic) 
> and use a different mode
> (c) write a named template to do the formatted and call it 
> from both places
> (d) write a global variable to contain the formatted data as 
> a result tree fragment, and reference the variable from both places.

The display logic at the two places are little different.  I see (b) and (d)
should work for my situation, I just don't know how to use them :(
I tried to use (d) like the following:

<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="";>
<!-- get a copy of shipto element -->
<xsl:variable name="ShipTo">
<xsl:copy-of select="/pick/addressinfo/shipto"/>

IE5 respond with "Keyword xsl:variable may not be used here."  What I did
wrong here?  Also, when I use it, can I just use it like the following?
<xsl:value-of select="ShipTo/firstname" />

Much thanks,

Xiaocun Xu

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