function nowDisplay(){
  document.form1.textbox1.style.backgroundColor = "black";
  document.form1.textbox1.style.color = "white";
  dayArray = new Array("日","月","火","水","木","金","土");
  date = new Date();
  
  nowString = date.getFullYear() + "/";
  nowString += date.getMonth()+ 1 + "/";
  nowString += date.getDate();
  nowString += "(" + dayArray[date.getDay()] + ")";
  
  h = date.getHours();
  m = date.getMinutes();
  s = date.getSeconds();
  
  if(h < 10) h = "0" + h;
  if(m < 10) m = "0" + m;
  if(s < 10) s = "0" + s;
  
  nowString += "  " + h + "：" + m + "：" + s;
  document.form1.textbox1.value=nowString;
  setTimeout("nowDisplay()", 1000);
}