$link=$db->query('SELECT * FROM newsy ORDER BY id desc');
     while($wiersz=mysql_fetch_array($link))
     {
  echo '<p><b>'.$wiersz['temat'].'</b> - '.$wiersz['dodano'].' - <a href="admin.php?page=newsy&mode=edit&id='.$wiersz['id'].'">Edytuj</a> -
     <a href="'.$http_dir.'admin.php?page=newsy&mode=usun&id='.$wiersz['id'].'">Usuń</a>
     <br></p>';
     }

if($_GET['mode'] == 'usun'){
$sql = 'DELETE * FROM newsy Where `id` ='.intval($_GET['id'].'';
$db->query($sql);
}

if($_GET['mode'] == 'usun' && intval($_GET['id'])){
$db->query("DELETE  FROM newsy WHERE `id` =".intval($_GET['id'])."");
}