[PHP] Fehler "$end" ?!

<?php
if($_GET['op'] == "") {
$abfrage = mysql_query("SELECT * FROM `username` WHERE `username` = '$_SESSION[user]'");
while($row = mysql_fetch_assoc($abfrage))
{
$team = $row[team];
}


?>




<b><u>Statistiken:</b></u><br>
<table border='0'>
 <tr>
  <td>Nickname:</td><td><input name='username' value=''.$user.'' readonly=readonly type='text' size='30' maxlength='16'></td>
  <td>Score:</td><td><input name='score' value=''.$level.'' readonly=readonly size='30' maxlength='6'></td>
 </tr>
 <tr>
  <td>Money:</td><td><input name='money' value=''.$money.' $' readonly=readonly size='30' maxlength='10'></td>
  <td>Zeit:</td><td><input name='time' value=''.$time.' Min.' readonly=readonly size='30' maxlength='5'></td>
 </tr>
 <tr>
  <td><form method='POST' action='interface.php?site=ownprofile&op=changeteam'>
  Team:</td><td>


<input type='radio' value='1' name='blacksouls' onclick ='this.form.submit()' <?php if($team == 1) { echo "checked='checked'"; } ?> > Blacksouls </form></td>




 </tr>
</table>
<br><br>
<b><u>Optionen:</b></u>
<table border='0'>
 <tr>
  <td><a href='../wi/interface.php?site=skin'>Skin &Auml;ndern</a></td><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td>Team &Auml;ndern</td>
 </tr>
 <tr>
  <td><a href='../wi/interface.php?site=pw_change'>Passwort &Auml;ndern</a></td><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td><a href='../wi/interface.php?site=email_change'>eMail-Adresse &Auml;ndern</a></td>
 </tr>






<?php
if($_GET['op'] == "changeteam") {
	$aendern = "UPDATE username Set team = '$_POST[team]' WHERE username = '$user'";
	mysql_query($aendern);
	redirect('interface.php','',3);
	echo "<font color=green><b>Das Team wurde erfolgreich geändert....Du wirst in 3 Sekunden weitergeleitet...</b></font>";
	return 1;
}
?>