multi-document question

I'm a non-programmer relative newbie to xslt, and am stuck on the 
following problem.  I want to take this sort of file:
<modsCollection>
        <mods id="1">
                <abc>one</abc>
        </mods>
        <mods id="2">
                <abc>two</abc>
        </mods>
</modsCollection>

...and to break it into individual files that exactly match the content 
of the mods element.  I also want these files to be named based on the 
id attribute on the mods element.  So, I'd like, for example, a file 
called "1.mods" whose content is:
        <mods id="1">
                <abc>one</abc>
        </mods>

Below is what I have so far, which is getting me individual files 
correctly named, but content like this:
<?xml version="1.0"?>
<mods>oneone</mods>

What am I doing wrong, and how do I fix it?

Thanks,
Bruce
================================
<?xml version='1.0' encoding='utf-8'?>
<xsl:stylesheet version="1.0"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
                xmlns:exsl="http://exslt.org/common";
                extension-element-prefixes="exsl">
      <xsl:output method="xml" version="1.0" encoding="utf-8" 
indent="yes"/>
         <xsl:strip-space elements="*"/>

   <xsl:template match="mods">
        <exsl:document href="{(_at_)id}(_dot_)mods" method="xml">
        <xsl:copy>
           <xsl:apply-templates select="@* | node()"/>
        </xsl:copy>
        </exsl:document>
   </xsl:template>

</xsl:stylesheet>


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