function validator(form) { 

  if (form.name.value == "") {
    alert("Please provide us with your Name.");
    form.name.focus();
    return false;
  }
  if (form.email.value == "") {
    alert("Please provide us with your email address.");
    form.email.focus();
    return false;
  }
  
  if (form.spam.value != "r7ZmTa") {
    alert("The SpamCheck letters you have typed do not match the picture.  Please try again.");
    form.spam.focus();
    return false;
  }  

return true; 
}