function GetSize(N)
{
  w = 640;
  h = 480;
  switch (N)
  {
    case 1:
    h = 465;
    break;

    case 2:
    h = 381;
    break;

    case 3:
    w = 640;
    h = 384;
    break;
  };

  return w+','+h;
};