Where is the mistake?

[Elhombrebala]

I get the following error message processing this page, but I can't see where's the mistake:
Parse error: parse error in /chs/p1/costa4seasons.com/home/html/renamesession.php on line 19

<?php
session_start();
$oldsession=session_id();
$link = mysql_connect('', '', ''); 
mysql_select_db("",$link); 
$result = mysql_query("SELECT Inmo FROM Sesiones WHERE (Sesion='$oldsession')", $link); 
while($row = mysql_fetch_array($result)) { 
$Inmo=$row["Inmo"];
$rs = mysql_query($result,$link); 
if (mysql_num_rows($rs)!=0){ 
} 
session_regenerate_id();
$session=session_id();  

$Fecha = date("Y-d-m h:i:s"); 
$sql = "INSERT INTO Sesiones ( Fecha, Inmo, Sesion)" .   

"VALUES ('$Fecha', '$Inmo', '$session')";   

$result2 = mysql_query($sql) or die(mysql_error().'<p>'.$sql.'</p>');   

header ("Location: panelcontrol.html");   

}else {   ///ERROR SUPOSED TO BE HERE!!!
header("Location: acceso6.html?errorusuario=si");   

}   

mysql_close($link);   

?>

[tserbis]

if (mysql_num_rows($rs)!=0){

}
session_regenerate_id();