dom = (document.getElementById)? true : false;
nn4 = (document.layers)? true : false;
ie4 = (document.all && !dom)? true : false;

function refreshClock() {
  var currDate = new Date();
  var hours = currDate.getHours();
  var minutes = currDate.getMinutes();
  var seconds = currDate.getSeconds();
  if (ie4) document.all['clocktd'].innerHTML = '<b>'+((hours - (hours % 10)) / 10)+(hours % 10)+':'+((minutes - (minutes % 10)) / 10)+(minutes % 10)+':'+((seconds - (seconds % 10)) / 10)+(seconds % 10)+'</b>';
  if (dom) document.getElementById('clocktd').innerHTML = '<b>'+((hours - (hours % 10)) / 10)+(hours % 10)+':'+((minutes - (minutes % 10)) / 10)+(minutes % 10)+':'+((seconds - (seconds % 10)) / 10)+(seconds % 10)+'</b>';
}

  window.setInterval(refreshClock, 1000, "javascript");