function Validator(theForm)
{
  if (theForm.Name.value == "")
  {
    alert("Please enter a value for the \"Your name\" field.");
    theForm.Name.focus();
    return (false);
  }

  if (theForm.Telephone.value == "")
  {
    alert("Please enter a value for the \"Your telephone number\" field.");
    theForm.Telephone.focus();
    return (false);
  }

  if (theForm.Address.value == "")
  {
    alert("Please enter a value for the \"Your address\" field.");
    theForm.Address.focus();
    return (false);
  }

  if (theForm.TownCity.value == "")
  {
    alert("Please enter a value for the \"Your town or city\" field.");
    theForm.TownCity.focus();
    return (false);
  }

  if (theForm.Info.value == "")
  {
    alert("Please enter a value for the \"Your event details\" field.");
    theForm.Info.focus();
    return (false);
  }
  return (true);
}