function Form_Validator(theForm)
{
  if (theForm.name.value == "")
  {
    alert("Please enter your name.");
    theForm.name.focus();
    return (false);
  }
  if (theForm.address.value == "")
  {
    alert("Please enter your address.");
    theForm.address.focus();
    return (false);
  }

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

  if (theForm.email.value == "")
  {
    alert("Please enter your email address.");
    theForm.email.focus();
    return (false);
  }
  return (true);
}