Hi

I have a sample book.xml as follows:

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="sample.xsl"?>
<catalog>
   <book id="bk101">
      <title>XML Developer's Guide</title>
      <author>Gambardella, Matthew</author>
      <genre>Computer</genre>
      <price>44.95</price>
      <publish_date>2000-10-01</publish_date>
      <description>An in-depth look at creating applications with
XML.</description>
   </book>
   <book id="bk102">
      <title>Midnight Rain</title>
      <author>Ralls, Kim</author>
      <genre>Fantasy</genre>
      <price>5.95</price>
      <publish_date>2000-12-16</publish_date>
      <description>A former architect battles corporate zombies, an
evil sorceress, and her own childhood to become queen of the world.</
description>
   </book>
   <book id="bk103">
      <title>Maeve Ascendant</title>
      <author>Corets, Eva</author>
      <genre>Fantasy</genre>
      <price>5.95</price>
      <publish_date>2000-11-17</publish_date>
      <description>After the collapse of a nanotechnology society in
England, the young survivors lay the foundation for a new society.</
description>
   </book>
   <book id="bk104">
      <title>Oberon's Legacy</title>
      <author>Corets, Eva</author>
      <genre>Fantasy</genre>
      <price>5.95</price>
      <publish_date>2001-03-10</publish_date>
      <description>In post-apocalypse England, the mysterious agent
known only as Oberon helps to create a new life for the inhabitants of
London. Sequel to Maeve Ascendant.</description>
   </book>
   <book id="bk105">
      <title>The Sundered Grail</title>
      <author>Corets, Eva</author>
      <genre>Fantasy</genre>
      <price>5.95</price>
      <publish_date>2001-09-10</publish_date>
      <description>The two daughters of Maeve, half-sisters, battle
one another for control of England. Sequel to Oberon's Legacy.</
description>
   </book>
   <book id="bk106">
      <title>Lover Birds</title>
      <author>Randall, Cynthia</author>
      <genre>Romance</genre>
      <price>4.95</price>
      <publish_date>2000-09-02</publish_date>
      <description>When Carla meets Paul at an ornithology conference,
tempers fly as feathers get ruffled.</description>
   </book>
   <book id="bk107">
      <title>Splish Splash</title>
      <author>Thurman, Paula</author>
      <genre>Romance</genre>
      <price>4.95</price>
      <publish_date>2000-11-02</publish_date>
      <description>A deep sea diver finds true love twenty thousand
leagues beneath the sea.</description>
   </book>
   <book id="bk108">
      <title>Creepy Crawlies</title>
      <author>Knorr, Stefan</author>
      <genre>Horror</genre>
      <price>4.95</price>
      <publish_date>2000-12-06</publish_date>
      <description>An anthology of horror stories about roaches,
centipedes, scorpions  and other insects.</description>
   </book>
   <book id="bk109">
      <title>Paradox Lost</title>
      <author>Kress, Peter</author>
      <genre>Science Fiction</genre>
      <price>6.95</price>
      <publish_date>2000-11-02</publish_date>
      <description>After an inadvertant trip through a Heisenberg
Uncertainty Device, James Salway discovers the problems of being
quantum.</description>
   </book>
   <book id="bk110">
      <title>Microsoft .NET: The Programming Bible</title>
      <author>O'Brien, Tim</author>
      <genre>Computer</genre>
      <price>36.95</price>
      <publish_date>2000-12-09</publish_date>
      <description>Microsoft's .NET initiative is explored in detail
in this deep programmer's reference.</description>
   </book>
   <book id="bk111">
      <title>MSXML3: A Comprehensive Guide</title>
      <author>O'Brien, Tim</author>
      <genre>Computer</genre>
      <price>36.95</price>
      <publish_date>2000-12-01</publish_date>
      <description>The Microsoft MSXML3 parser is covered in detail,
with attention to XML DOM interfaces, XSLT processing, SAX and more.</
description>
   </book>
   <book id="bk112">
      <title>Visual Studio 7: A Comprehensive Guide</title>
      <author>Galos, Mike</author>
      <genre>Computer</genre>
      <price>49.95</price>
      <publish_date>2001-04-16</publish_date>
      <description>Microsoft Visual Studio 7 is explored in depth,
looking at how Visual Basic, Visual C++, C#, and ASP+ are integrated
into a comprehensive development environment.</description>
   </book>
</catalog>

I want to print the "book genre and total no of books with that
genre".  For e.g  Computer - 4 , Fantancy - 4 , Romance - 1.

Can somebody help me with this..?

Thanks,
Shilpa