XML Source Document (Sales.xml)

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="transform.xsl"?>
<sales>
   <summary>
      <heading>Scootney Publishing</heading> 
      <subhead>Regional Sales Report</subhead> 
      <description>Sales report for the West Coast, Central and East Coast regions.</description> 
   </summary>
   <data>
      <region>
         <name>West Coast</name> 
         <quarter number="1" books_sold="24000" /> 
         <quarter number="2" books_sold="38600" /> 
         <quarter number="3" books_sold="44030" /> 
         <quarter number="4" books_sold="21000" /> 
      </region>
      <region>
         <name>Central</name> 
         <quarter number="1" books_sold="11000" /> 
         <quarter number="2" books_sold="16080" /> 
         <quarter number="3" books_sold="25000" /> 
         <quarter number="4" books_sold="29000" /> 
      </region>
      <region>
         <name>East Coast</name> 
         <quarter number="1" books_sold="27000" /> 
         <quarter number="2" books_sold="31400" /> 
         <quarter number="3" books_sold="40100" /> 
         <quarter number="4" books_sold="30000" /> 
      </region>
   </data>
</sales>