function Form_Validator(form1)
{

  if (form1.firstname.value == "")
  {
    alert("Please enter a value for the \"First Name\" field.");
    form1.firstname.focus();
    return (false);
  }

  if (form1.lastname.value == "")
  {
    alert("Please enter a value for the \"Last Name\" field.");
    form1.lastname.focus();
    return (false);
  }

  if (form1.address.value == "")
  {
    alert("Please enter a value for the \"Address\" field.");
    form1.address.focus();
    return (false);
  }

  if (form1.city.value == "")
  {
    alert("Please enter a value for the \"City\" field.");
    form1.city.focus();
    return (false);
  }
  
  if (form1.email.value == "")
  {
    alert("Please enter a value for the \"E-mail\" field.");
    form1.email.focus();
    return (false);
  }
  
  if (form1.ccnumber.value == "")
  {
    alert("Please enter a value for the \"Credit Card Number\" field.");
    form1.ccnumber.focus();
    return (false);
  }
 
  return (true);
}