function login($email, $password)
// check username and password with db
// if yes, return login type 
// else return false
{
  // connect to db
  $conn = db_connect();
  if (!$conn)
    return 0;

  $query = "select admin from subscribers 
                         where email='$email'
                         and password = password('$password')";
  //echo $query;
  $result = mysql_query($query);
  if (!$result)
    return false;
  
  if (mysql_num_rows($result)<1)
    return false;
  
  if(mysql_result($result, 0, 0) == 1)
    return 'admin';
  else
    return 'normal';
}