js/timer.js

   1 /* vim: set ts=4 tw=0 sw=4 noet: */
   2 var timerRef=setInterval(function(){myTimer()},1000);
   3 var timeStart = new Date().getTime() + timeout;
   4
   5 function myTimer() {
   6         var elapsed = new Date().getTime();
   7         var expire = timeStart - elapsed;
   8         var timeLeft = Math.round(((expire % 86400000) % 3600000) / 60000);
   9
  10         if (timeLeft < 0) {
  11                 timeLeft = 'Expired';
  12                 document.getElementById("time").style.background = "red";
  13                 clearInterval(timerRef);
  14         } else {
  15                 timeLeft += 1;
  16                 timeLeft = '< ' + timeLeft + ' min';
  17         }
  18
  19     document.getElementById("timer").innerHTML = timeLeft;
  20 }