function checkOutDateChanged(calendar) {
if (calendar.dateClicked) {
  var y = calendar.date.getFullYear();
  var m = calendar.date.getMonth() + 1;     // integer, 0..11
  var d = calendar.date.getDate();      // integer, 1..31
  document.ELCHotelsForm.Date2.value = d + "/" + m + "/" + y;
}
};

Calendar.setup(
{
  flat         : "check-out-date-calendar-container", // ID of the parent element
  flatCallback : checkOutDateChanged           			   // our callback function
}
);