function emailShow() {
  $('#emailLink').hide();
  $('#emailAddress').val('');
  $('#emailForm').fadeIn("slow");
};

function emailHide() {
  $('#emailForm').hide();
  $('#emailLink').fadeIn("slow");
};

function emailSuccess(user) {
  $('#emailForm').hide();
  $('#emailLink').html('<span><strong>'+user + '</strong> has been subscribed!</span>');
  $('#emailLink').fadeIn("slow");
};

function emailSignUp() {
  $.post("/email.php", { emailAddress: $('#emailAddress').val() },
  function(data){
    if (data == 'fail') {
      alert('Your email address failed, please try again.');
      $('#emailAddress').val('');
      emailHide();
    } else {
      emailSuccess(data);
    }
  });
};