timecode conversion

prettyTime

// convert milliseconds to hours, minutes, seconds
var prettyTime = function() {
  return function(value) {
    var hours = Math.floor(value / 3600),
        mins = '0' + Math.floor((value % 3600) / 60),
        secs = '0' + Math.floor((value % 60));
        mins = mins.substr(mins.length - 2);
        secs = secs.substr(secs.length - 2);
    if(!isNaN(secs)){
      if (hours){
        return hours+':'+mins+':'+secs;  
      } else {
        return mins+':'+secs;  
      };
    } else {
      return '00:00';
    };
  };
});