function validateForm(){
  var message = "Please fill out all required fields before advancing.";

  if(document.JWOCOCT09.firstname.value == ""){
    alert(message);
    return false;
  }

  if(document.JWOCOCT09.lastname.value == ""){
    alert(message);
    return false;
  }

  if(document.JWOCOCT09.dobyear.value == ""){
    alert(message);
    return false;
  }

  if(document.JWOCOCT09.email.value == ""){
    alert(message);
    return false;
  }
  return true;
}