function signin_Validator(theForm)
{

  if (theForm.username.value == "")
  {
    alert("Please enter your Username.");
    theForm.username.focus();
    return (false);
  }

  if (theForm.password.value == "")
  {
    alert("Please enter your Password.");
    theForm.password.focus();
    return (false);
  }

  return (true);
}