<script type="text/javascript">
var d=document
var NN = d.layers ? true : (window.opera && !d.createComment) ? true:false
function showTime(){
   var tmN = new Date()
   var dH = '' + tmN.getHours(); dH =dH.length<2 ? '0' + dH:dH
   var dM = '' + tmN.getMinutes(); dM =dM.length<2 ? '0' + dM:dM
   var dS = '' + tmN.getSeconds(); dS =dS.length<2 ? '0' + dS:dS
   var tmp = dH + ':' + dM + ':' + dS
   if (NN) d.F.chas.value = tmp;
   else d.getElementById('tm').innerHTML=tmp
   var t = setTimeout('showTime()',1000)
}
</script>
<div id=tm><form name="F"><input type="button" name="chas" value="XX:XX:XX"></form></div>
<script type="text/javascript">showTime()</script>