function nsform(frm){
  var data = frm.elements['email'].value;

  $.post(
    '/classes/NewsletterSignup.php',
    {
      email: data
    },
    onListsSuccess
  );

  frm.elements['email'].value = '';

  return false;
}

function contactform(frm){
  var firstname = frm.elements['firstname'].value;
  var lastname = frm.elements['lastname'].value;
  var email = frm.elements['email'].value;
  var subject = frm.elements['subject'].value;
  var message = frm.elements['message'].value;

  $.post(
    '/classes/SubmitContactUs.php',
    {
      firstname: firstname,
      lastname: lastname,
      email: email,
      subject: subject,
      message: message
    },
    onListsSuccess
  );

  frm.elements['firstname'].value = '';
  frm.elements['lastname'].value = '';
  frm.elements['email'].value = '';
  frm.elements['subject'].value = '';
  frm.elements['message'].value = '';

  return false;
}

function onListsSuccess(data){
  alert(data);
}