function checkForm() {
  var message = "Search Failed.\n";

  if (document.searchMod.inDay.value == "" || document.searchMod.inMonthYear.value == "" || document.searchMod.outDay.value == "" || document.searchMod.outMonthYear.value == "")
    message += "Please review your Check-in and Check-out date selection\n";

  if (message != "Search Failed.\n") {
  alert(message);
  return false;
  } else {
  return true;
  }
}