function formatTime() {
  now = new Date();
  hour = now.getHours();
  min = now.getMinutes();
  sec = now.getSeconds();




    if (min <= 9) {
      min = "0" + min; }
    if (sec <= 9) {
      sec = "0" + sec; }
    if (hour < 10) {
      hour = "0" + hour; }
    document.clock.sivam.value = hour + ':' + min + ':' + sec;


  setTimeout("formatTime()", 1000);
}

window.onload=formatTime;