Calculate time from central airport to nagoya

cal.js

// http://www.meitetsu.co.jp/cht/timetable/centrair/timetable/access_e05_02.html
$('table[bordercolor=lightgrey] tr').each(function () {
  var $this = $(this),
      $departCell = $this.find('td:nth-child(2)'),
      $arriveCell = $this.find('td:nth-child(5)'),
      departTime = $departCell.text(),
      arriveTime = $arriveCell.text();
  if (departTime.indexOf(':') == -1 || arriveTime.indexOf(':') == -1) {
    return;
  }
  var departH = parseInt(departTime.split(':')[0], 10),
      departM = parseInt(departTime.split(':')[1], 10),
      arriveH = parseInt(arriveTime.split(':')[0], 10),
      arriveM = parseInt(arriveTime.split(':')[1], 10),
      hourDiff = arriveH - departH,
      timeDiff = hourDiff * 60 + arriveM - departM;
  $arriveCell.find('b').text($arriveCell.text() + ' ('+ timeDiff +')');
});