<script language="javascript">
now = new Date();
dif = now.getTime() - '<? echo date("F d, Y H:i:s"); ?>'


function updateTime() {
  now = new Date();
  now.setTime(now.getTime() - dif);


  var dag = now.getDate();
  var month = now.getMonth();
  var year = now.getUTCFullYear();
  month = month + 1;


  var hour = now.getHours();
  if(hour < 10)
    hour = "0" + hour;
  var minute = now.getMinutes();
  if(minute < 10)
    minute = "0" + minute;
  var second = now.getSeconds();
  if(second < 10)
    second = "0" + second;


  document.getElementById('tijd').innerHTML = hour +":"+ minute +":"+ second;
  document.getElementById('datum').innerHTML = dag +"-"+ month +"-"+ year;
}
setInterval("updateTime()",500);
</script>
<center>
<font color=yellow><b>Tijd & datum</b></font><br>
<div id=tijd>...</div>
<div id=datum>...</div><br>