var timerID;
var timerRunning = false;
var today = new Date();
var enday = new Date();
var secPerDay = 0;
var minPerDay = 0;
var hourPerDay = 0;
var secsLeft = 0;
var secsRound = 0;
var secsRemain = 0;
var minLeft = 0;
var minRound = 0;
var minRemain = 0;
var timeRemain = 0;
var decremain = 0;
var decround = 0;
function stopclock (){
  if(timerRunning)
    clearTimeout(timerID);
  timerRunning = false;
}
function startclock () {
  stopclock();
  showtime();
}
function showtime () {
  today = new Date();
  enday = new Date("Jan 08 2007 20:30");
  enday.setYear("2007");
  secsPerDay = 1000 ;
  minPerDay = 60 * 1000 ;
  hoursPerDay = 60 * 60 * 1000;
  PerDay = 24 * 60 * 60 * 1000;

  var d = new Date();
  var o = 0;
  var msecsRemain = 1000 - d.getMilliseconds();
  if(msecsRemain < 100){
    if(msecsRemain < 10)
        msecsRemain = "00"+msecsRemain;
    else
        msecsRemain = "0"+msecsRemain;
  }

  secsLeft = (enday.getTime() - today.getTime()) / minPerDay;
  decremain = (enday.getTime() - today.getTime()) / secsPerDay;
  decround = Math.round(decremain);
  decremain = decround + " seconds";
  secsRound = Math.round(secsLeft);
  secsRemain = secsLeft - secsRound;
  secsRemain = (secsRemain < 0) ? secsRemain = 60 - ((secsRound - secsLeft) * 60) : secsRemain = (secsLeft - secsRound) * 60;
  secsRemain = Math.round(secsRemain);

  minLeft = ((enday.getTime() - today.getTime()) / hoursPerDay);
  minRound = Math.round(minLeft);
  minRemain = minLeft - minRound;
  minRemain = (minRemain < 0) ? minRemain = 60 - ((minRound - minLeft)  * 60) : minRemain = ((minLeft - minRound) * 60);
  minRemain = Math.round(minRemain - 0.495);

  hoursLeft = ((enday.getTime() - today.getTime()) / PerDay);
  hoursRound = Math.round(hoursLeft);
  hoursRemain = hoursLeft - hoursRound;
  hoursRemain = (hoursRemain < 0) ? hoursRemain = 24 - ((hoursRound - hoursLeft)  * 24) : hoursRemain = ((hoursLeft - hoursRound) * 24);
  hoursRemain = Math.round(hoursRemain - 0.5);

  daysLeft = ((enday.getTime() - today.getTime()) / PerDay);
  daysLeft = (daysLeft - 0.5);
  daysRound = Math.round(daysLeft);
  daysRemain = daysRound;

  timeRemain = daysRemain + " dni, " + hoursRemain + " ur, " + minRemain + " minut, " + secsRemain + " sekund, " + msecsRemain + " ms";
  document.getElementById('face').innerHTML = timeRemain;
  timerID = setTimeout("showtime()",100);
  timerRunning = true;
  if (daysRemain < 0) {
  clearTimeout(timerID);
  timerRunning = false;
  document.clock.face.value = "It is here";
  }
}