Paginazione non funziona sul dominio

[havana1977]

Qualcuno sa dirmi cosa non funziona in questa paginazione? Il codice sembra ok ma sul mio dominio non va, su un altro invece funziona, praticamente se clicco su successivi rimane a pagina 1... forse c'è qualcosa di obsoleto?

<?php

include("dbinfo.php");
 
$connect  = mysql_connect($host, $dbuser, $dbpasswd) or
            die('[b]MySQL Connection Error:[/b] ' .
            mysql_errno() . ': ' .
            mysql_error());
 
mysql_select_db($database, $connect) or
            die('[b]Database Connection Error:[/b] ' .
            mysql_errno() . ': ' .
            mysql_error());


$usr_id = 63;

if (!isset($start) OR $start<0)
$start=0;
$step = 5;
?>

<table width="650" border="0">
  <tr>
    <td width="20%" align="left"><? 

if ($start>0)
{ $start_back = $start - $step;
echo "<a href=mytracks.php?start=$start_back>precedenti</a>";
}
?></td>
    <?

$query = "SELECT count(*)as tot FROM jos_sobi2_item  WHERE owner=$usr_id";

$result = mysql_query($query);
$row = mysql_fetch_array($result);

$pages = intval(($row['tot']-1) / $step)+1;
//echo $pages;
//echo $row['tot'];
?>
    <td width="60%" align="center"><?
for ($i=0; $i<$pages AND $i<5; $i++)
{ $start_page = $i * $step;
echo "<a href=mytracks.php?start=$start_page>" . ($i+1) . "</a> ";
}
?></td>
    <td width="20%"><?
if ($start + $step < $row['tot'])
{ $start_next = $start + $step;
echo "<a href=mytracks.php?start=$start_next>successivi</a>";
}
?></td>
  </tr>
</table>

<?php 

$query = "SELECT title,owner FROM `jos_sobi2_item` WHERE owner=$usr_id ORDER BY title ASC LIMIT $start,$step";

$result = mysql_query($query);

$col = 0; 
$max_col = 1; 
while ($linea = mysql_fetch_array($result)) { 
       if($col >= $max_col) { 
          $col = 0; 
          echo ""; 
       } 
 
       
print "        <td height='20' align='left'>[url=""][b]".$linea['title']." [/b][/url]</td>
       
        </tr>    
        <tr><td colspan='9' height='1' align='right' valign='bottom' bgcolor='#EEEEEE'>[img]px.jpg[/img]</td></tr></table>"; 
       ++$col; 
} 
?>