<script language="JavaScript">

<!--

var clockID = 0;

function UpdateClock() {
   if(clockID) {
      clearTimeout(clockID);
      clockID  = 0;
   }

   var tDate = new Date();

   document.theClock.theTime.value = ""
                                   + tDate.getHours() + ":"
                                   + tDate.getMinutes() + ":"
                                   + tDate.getSeconds();
  
   clockID = setTimeout("UpdateClock()", 1000);
}
function StartClock() {
   clockID = setTimeout("UpdateClock()", 500);
}

function KillClock() {
   if(clockID) {
      clearTimeout(clockID);
      clockID  = 0;
   }
}

//-->

</script>
<form name="theClock">
   <input type=text name="theTime" size=8>
</form>