ID for the Next / Prev - row

Hi!
perhaps it would be helpfull, if the id for the prev und next row would be written in the session.
for exemple:

$nextlink.= "editid##@index##=".htmlspecialchars(rawurlencode($next[##@index##]));

$_SESSION["nextlink"]=$nextlink;

and
$prevlink.= "editid##@index##=".htmlspecialchars(rawurlencode($prev[##@index##]));

$_SESSION["prevlink"]=$prevlink;