English 
Italiano This article explain how to use XSL Transformation to build an XHTML document.
XSL Transform for build XHTML
Assume we want transform following XML document
<?xml version="1.0" encoding="UTF-8"?>
<books>
<book isbn="9781849511742" title="WordPress 3.0 jQuery" pdate="24/09/2010"/>
<book isbn="9781849511407" title="WordPress Top Plugins" pdate="21/09/2010"/>
<book isbn="9781847196569" title="WordPress 2.7 Complete" pdate="02/06/2009"/>
<book isbn="9781849510080" title="WordPress 2.8 Theme Design" pdate="30/11/2009"/>
<book isbn="9781847197382" title="WordPress 2.7 Cookbook" pdate="15/07/2009"/>
<book isbn="9781847193599" title="WordPress Plugin Development: Beginner's Guide" pdate="16/02/2009"/>
<book isbn="9781847198822" title="WordPress and Flash 10x Cookbook" pdate="19/04/2010"/>
<book isbn="9781849512367" title="Joomla! 1.5 Cookbook" pdate="26/10/2010"/>
<book isbn="9781849511803" title="Joomla! 1.5 Top Extensions Cookbook" pdate="18/10/2010"/>
<book isbn="9781849512220" title="Building job sites with Joomla!" pdate="21/09/2010"/>
<book isbn="9781849511704" title="Joomla! 1.5 Site Blueprints" pdate="26/05/2010"/>
<book isbn="9781847199904" title="Joomla! 1.5: Beginner's Guide" pdate="05/03/2010"/>
<book isbn="9781847195166" title="Joomla! 1.5x Customization: Make Your Site Adapt to Your Needs" pdate="24/08/2009"/>
</books>
An XSL Transform take on XML input and will produce output in several formats. To produce XHTML output we must define the correct output format at the top of the document.
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="xml" version="1.0" encoding="UTF-8"
doctype-public="-//W3C//DTD XHTML 1.1//EN"
doctype-system="http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"
indent="yes"/>
<xsl:template match="/">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Books</title>
</head>
<body>
<h1>Books</h1>
<table>
<tr>
<th>isbn</th>
<th>title</th>
<th>publish date</th>
</tr>
<xsl:for-each select="books/book">
<tr>
<td><xsl:value-of select="@isbn"/></td>
<td><xsl:value-of select="@title"/></td>
<td><xsl:value-of select="@pdate"/></td>
</tr>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
The transform is quite simple, and here, there is an image showing the output result.
You can download source code
References
- transform XHTML to XHTML with XSLT: explain how to manipulate and produce XHTML via XSLT
- XML to XHTML Transformations with XSLT Processors