function checkFields() {
  user_name = document.regform.user_name.value;
  password1 = document.regform.password1.value;
  password2 = document.regform.password2.value;
  Title = document.regform.Title.value;
  FirstName = document.regform.FirstName.value;
  LastName = document.regform.LastName.value;
  MaidenName = document.regform.MaidenName.value;
  email = document.regform.email.value;
  FirstYear = document.regform.FirstYear.value;
  LastYear = document.regform.LastYear.value;
  GradYear = document.regform.GradYear.value;
  
  if (user_name == "") {
    alert("Please enter a username between 5 and 15 characters.");
    regform.user_name.focus();
    return false;
  }
  else if (password1 == "") {
    alert("Please enter a password of at least 6 characters.");
    regform.password1.focus();
    return false;
  }
  else if (password2 == "") {
    alert("Please retype your chosen password.");
    regform.password2.focus();
    return false;
  }
  else if (Title == "") {
    alert("Please enter a title.");
    regform.Title.focus();
    return false;
  }
  else if (FirstName == "") {
    alert("Please enter your first name.");
    regform.FirstName.focus();
    return false;
  }
  else if (LastName == "") {
    alert("Please enter your last name.");
    regform.LastName.focus();
    return false;
  }
  else if (MaidenName == "") {
    alert("Please enter your last name at graduation.");
    regform.MaidenName.focus();
    return false;
  }
  else if (email == "") {
    alert("Please enter a valid e-mail address.");
    regform.email.focus();
    return false;
  }
  else if (FirstYear == "") {
    alert("Please enter your first year at BHS.");
    regform.FirstYear.focus();
    return false;
  }
  else if (LastYear == "") {
    alert("Please enter your last or most recent year at BHS.");
    regform.LastYear.focus();
    return false;
  }
  else if (GradYear == "1940") {
    alert("Please choose a graduation year greater than 1940.");
    regform.GradYear.focus();
    return false;
  }
  
  else return true;
}