var tdiff;
function doit()
{
  d = new Date;
  r = new Date(d.getTime() - tdiff);
  document.getElementById('time').innerHTML=r.toLocaleString();
}
function getts()
{
  var ts = document.getElementById('ts').innerHTML;
  var d = new Date();
  tdiff = (d.getTime() - 1000 - (ts * 1000));
  doit();
  setInterval(doit, 200);
}