function validate(Search){
  if (document.getElementById('arrival').value==""){
document.getElementById('description').innerHTML = "<img src=assets/images/error.png> Arrival cannot be set to null.";
    return false;
  }
  if (document.getElementById('departure').value==""){
document.getElementById('description').innerHTML = "<img src=assets/images/error.png> Departure cannot be set to null.";
    return false;
  }
return true;
}