Time diff to human readable - Javascript

gistfile1.js

  function formatTimeDiff(diff) {
    var signifcants = 2,
        human = '',
        current,
        times = [['year',   31536000],
                 ['month',  2628000],
                 ['week',   606461],
                 ['day',    86400],
                 ['hour',   3600],
                 ['minute', 60],
                 ['second', 1]];

    times.every( function(tup){
      var unit = tup[0],
          time = tup[1];

      if (signifcants == 1) { human += ' ' };

      current = Math.floor(diff / time >= 1);

      if (current > 0) {
        human += current > 1 ? current + ' ' + unit : '1 ' + unit;
        signifcants -= 1;
        diff = diff % time;
      }

      return signifcants != 0;
    });

    return human;
  };