// valid form
function checkform(form){

  if (form.FirstName.value == "") {
    alert( "Please provide your first name." );
    return false;
  }
  
  if (form.Email.value == "") {
    alert( "Please provide your email address." );
    return false;
  }
  
  if (form.Message.value == "") {
    alert( "Please provide your message." );
    return false;
  }
    
  if (form.AntiSpam.value != "7") {
    alert( "The anti-spam question was not answered correctly. Try again." );
    form.AntiSpam.focus();
    return false;
  }

  return true;
}