// On the fly, alter the number of records
// displayed in List mode.
// This was not thoroughly tested but probably works OK.

$num_recs = array(10,20,30,40,50);

if(array_key_exists('limit', $_REQUEST)){

   $limit = intval($_REQUEST['limit']);

}else{

   $limit = 10;

}

$opts['cgi']['persist'] = array('limit' => $limit);

$opts['inc'] = $limit;

// uncomment to use links instead of SELECT box

/*
$buffer =  "\n".'<p>Records per page:<br>';
foreach($num_recs as $n){
   $buffer .=  "\n";
   if($n == $limit){
      $buffer .=  $limit.' | ';
   }else{
      $buffer .=  '<a href="'.basename($_SERVER['PHP_SELF']).'?limit='.$n.'">'.$n.'</a> | ';
   }
}
$buffer = substr($buffer, 0, -3)."\n".'</p>';
echo $buffer;
 */

// SELECT box

$buffer =  "\n".'<form name="myform1" action="hello" id="hello">';
$buffer .=  "\n".'<select name="mylinks1" onchange="window.location=document.myform1.mylinks1.options[document.myform1.mylinks1.selectedIndex].value">';
$buffer .=  "\n".'<option value="">'.$limit.' records displayed</option>';
foreach($num_recs as $n){
   if((isset($limit) && $n == $limit) || (isset($_GET['limit']) && $n == $_GET['limit'])){
      // no option
   }else{
      $buffer .=  "\n".'<option value="'.basename($_SERVER['PHP_SELF']).'?limit='.$n.'">'.$n.'</option>';
   }
}
$buffer .= '</select>';
$buffer .= '</form>';
$buffer .= isset($limit) ? '<p>Debug: value of $limit = '.$limit.'</p>' : '';

echo $buffer;