function showTime()
{
  var readTime = new Date();
  var hh = readTime.getHours();
  var mm = readTime.getMinutes();
  var ss = readTime.getSeconds();
  if (hh <= 9)
    hh = "0" + hh;
  if (mm <= 9)
    mm = "0" + mm;
  if (ss <= 9)
    ss = "0" + ss;
  document.getElementById("js_time").innerHTML = hh + ":" + mm + ":" + ss;
  window.setTimeout("showTime()", 1000);
}