problem s generovanim obsahu stranky

<?php
session_start();
include("dbreg.php");
$result = mysql_query("SELECT firstNAME,lastNAME,userNAME FROM users WHERE trieda='4D'", $link);
 

?>

<TABLE>
<TR><TD>Císlo</TD><TD>Meno</TD></TR>
<form method="POST" action="ziak.php">
<?php

$riadky=0;
$rowc=0;

while($models = mysql_fetch_array($result))
{
$rowc++;
$riadky++;


echo "<TR><TD>".$riadky."</TD><TD>".$models['firstNAME']." ".$models['lastNAME']."</TD><TD>";
session_register($rowc);

$_SESSION[$rowc]=$models["userNAME"];

?>
<input type="radio" name="user" value="$rowc">
<?php
echo "</TD></TR>";

}
?>
</TABLE>

<?php
session_start();
$userNAME =$_SESSION[$_POST['user']];
include("dbreg.php");
$znamky = mysql_query("SELECT firstNAME, lastNAME, SlovenskyJazyk,AnglickyJazyk,ObcianskaVychova, Matematika, TelesnaVychova FROM users WHERE userNAME='$userNAME'", $link);
?>

$userNAME =$_SESSION[$_POST['user']];

$userNAME =$_POST['user'];

session_register($rowc);

$_SESSION[$rowc]=$models["userNAME"];

?>
<input type="radio" name="user" value="$rowc">

?>
<input type="radio" name="user" value="<?php echo $models['userNAME']; ?>">