//現在の時刻の取得
var msg0 = "";
get_msg();

function get_msg(){
  gtim0 = new Date();
  hr0 = gtim0.getHours(); //時
  mn0 = gtim0.getMinutes(); //分
  sc0 = gtim0.getSeconds(); //秒
  yb0 = gtim0.getDay(); //曜日

  msg0 = "";
  msg0 += "日月火水木金土".substr(yb0,1) + "曜日です。　";
  if (hr0 < 5) msg0 += "good night!";
  else { if (hr0 < 12) msg0 += "good mornig!";
  else { if (hr0 < 17) msg0 += "good afternoon!";
  else { if (hr0 < 22) msg0 += "good evening!";
  else { if (hr0 < 24) msg0 += "good night!";
  }}}}
  document.write(msg0);
}