(function () {
  var target = new Date(new Date().getFullYear() + 1, 0, 1);
  function tick() {
    var diff = Math.max(0, target - Date.now());
    var d = Math.floor(diff / 86400000);
    var h = Math.floor((diff % 86400000) / 3600000);
    var m = Math.floor((diff % 3600000) / 60000);
    var s = Math.floor((diff % 60000) / 1000);
    document.getElementById('wl-days').textContent = d;
    document.getElementById('wl-hours').textContent = h;
    document.getElementById('wl-mins').textContent = m;
    document.getElementById('wl-secs').textContent = s;
  }
  tick();
  setInterval(tick, 1000);
})();