XML pagination

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how do you paginate the XML cos i have tried this xsl but it "start" parameter value does not reflect the changes. How do we modify it such that when we click the next button, it will go to the second page

<?xml version=&quot;1.0&quot;?>
<xsl:stylesheet xmlns:xsl=&quot;

http://www.w3.org/1999/XSL/Transform&quot;

version=&quot;1.0&quot;>


<xslutput method=&quot;html&quot; />
<xslaram name=&quot;start&quot;>1</xslaram>
<xslaram name=&quot;perpage&quot;>10</xslaram>

<xsl:variable name=&quot;totalitems&quot; select=&quot;count(//student)&quot;/>
<xsl:variable name=&quot;end&quot;>
<xsl:choose>
<xsl:when test=&quot;($start + $perpage) &gt; $totalitems&quot;>
<xsl:value-of select=&quot;$totalitems&quot;/>
</xsl:when>
<xsltherwise>
<xsl:value-of select=&quot;$start + $perpage - 1&quot;/>
</xsltherwise>
</xsl:choose>
</xsl:variable>

<!-- begin root template -->

<xsl:template match=&quot;/&quot;>



<h3>Showing records <xsl:value-of select=&quot;$start&quot;/>- <xsl:value-of
select=&quot;$end&quot;/> of
<xsl:value-of select=&quot;$totalitems&quot;/></h3>

<table border=&quot;0&quot; cellpadding=&quot;0&quot; cellspacing=&quot;0&quot;>
<tr><th>Product ID</th><th>Description</th><th>Price</th></tr>
<xsl:for-each select=&quot;school/student[position() >= $start and
position() &lt;= $end]&quot;>
<tr>
<td><xsl:value-of select=&quot;name&quot;/></td>
</tr>
</xsl:for-each>
</table>

<!-- if there are records before the block we are viewing, provide a
'prev.' link -->
<xsl:if test=&quot;$start > 1&quot;>
<a href=&quot;school.xml?start={$start - $perpage};perpage={$perpage}&quot;>prev.</a>
</xsl:if>

<!-- process *all* the <item> elements in the document to build the
'google-style' navbar -->
<xsl:apply-templates select=&quot;student&quot;/>

<!-- if there are more records, provide a 'next' link -->
<xsl:if test=&quot;$totalitems > $end&quot;>
<a href=&quot;school.xml?start2={$end + 1};perpage={$perpage}&quot; name=&quot;siao&quot;>next</a>
</xsl:if>


</xsl:template>

<!-- end root template -->

<!-- the 'item' template that builds the numbered navbar links -->
<xsl:template match=&quot;student&quot;>
<xsl:if test=&quot;position() mod $perpage = 1 or $perpage = 1&quot;>
<xsl:variable name=&quot;pagenum&quot;>
<xsl:value-of select=&quot;ceiling(position() div $perpage)&quot;/>
</xsl:variable>
<a href=&quot;school.xml?start={position()};perpage={$perpage}&quot;>
<xsl:value-of select=&quot;$pagenum&quot;/>
<!-- force whitespace in between the numbered links -->
<xsl:text> </xsl:text>
</a>
</xsl:if>
</xsl:template>

</xsl:stylesheet>