function jikoku(){
  data   = new Date();
  year   = data.getYear();
  month  = data.getMonth() + 1;
  date   = data.getDate();
  day    = data.getDay();
  hour   = data.getHours();
  mine   = data.getMinutes();
  sec    = data.getSeconds();
  week   = new Array("日","月","火","水","木","金","土");
  time = month + "月" + date + "日（" + week[day] + "）　"+ hour + "時" + mine + "分" ;
  document.F2.J2.value = time;
}
  setInterval("jikoku()",1000);