// Calculates the daylight saving time in the browser

function getDaylightSaving()
{
  var rightNow = new Date();
  var date2 = new Date(rightNow.getFullYear(), 6, 1, 0, 0, 0, 0);
  var temp = date2.toGMTString();
  var date4 = new Date(temp.substring(0, temp.lastIndexOf(" ")-1));
  var hoursDiffDaylightTime = (date2 - date4) / (1000 * 60 * 60);

  return hoursDiffDaylightTime;
}