theDate = new Date();
  theHours = theDate.getHours();
  if (theHours >= 0)  theText = "Доброй ночи !!!";
  if (theHours >= 4)  theText = "Доброе утро !!!";
  if (theHours >= 11) theText = "Добрый день !!!";
  if (theHours >= 18) theText = "Добрый вечер !!!";
  if (theHours >= 22) theText = "Доброй ночи !!!";
  document.writeln (theText);