gistfile1.txt

// converts HH:ii time to seconds from midnight
var timeToSeconds = function(time){
  if (time.length != 5) {
    return false;
  }
  var h = Number(time.split(':')[0]);
  var m = Number(time.split(':')[1]);
  if (isNaN(h) || isNaN(m)) {
    return false;
  }
  if (h < 0 ||  h > 23) {
    return false;
  }
  if (m < 0 ||  m > 59) {
    return false;
  }
  return h*60*60+m*60;
};