function loginCheck() {
  if ($('loginusername').value == "") {
    alert("You forgot to type a username");
    return false;
  }
  else if ($('loginpassword').value == "") {
    alert("You forgot to type a password");
    return false;
  }
  else {
    $('loginpassword').value = hex_md5($('loginpassword').value);
    return true;
  }
}