Code
<Body OnLoad="startclock(); TimerOne=window.setTimeout">
<Script Language="JavaScript">
var timerID = null;
var timerRunning = false;
function stopclock ()
{if(timerRunning)
clearTimeout(timerID);
timerRunning = false;}
function showtime ()
{var now = new Date();
var hours = now.getHours();
var minutes = now.getMinutes();
var seconds = now.getSeconds();
var timeValue = "" + hours;
timeValue += ((minutes < 10) ? ":0" : ":") + minutes;
timeValue += ((seconds < 10) ? ":0" : ":") + seconds;
window.status = timeValue;
timerID = setTimeout("showtime()",1000);
timerRunning = true;}
function startclock ()