$var['next']
$var['prev']

<RDF:Seq about="http://www.atmail.com/rdf">
$var['xulstyle']

<!-- if($var['prev']) { -->
<RDF:li resource="http://www.atmail.com/rdf/MESSAGES/999999998" />
<!-- } -->

<!-- if($var['next']) { -->
<RDF:li resource="http://www.atmail.com/rdf/MESSAGES/999999999" />
<!-- } -->

</RDF:Seq>

</RDF:RDF>