$(function(){
  $('#newsletter-form').submit(function(event){
    var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
    var email = $(this).find('input[name="email"]').val();
    if(reg.test(email) == true){
      $.ajax({
        url: '/sendMail',
        type: 'POST',
        data: $(this).serialize(),
        success: function(data){
          if(data == 1){
            jAlert('success', "<p><strong>Thank you!</strong></p><p>Your e-mail address has been successfully added to the newsletter.</p>", 'Newsletter');
          } else {
            jAlert('error', '<p><strong>An error occured!</strong></p><p>Try again.</p>', 'Newsletter');
          }
        },
        error: function(){
          jAlert('error', '<p><strong>An error occured!</strong></p><p>Try again.</p>', 'Newsletter');
        }
      });
    } else {
      jAlert('warning', '<p>Please input a correct e-mail address!</p>', 'Newsletter');
    }
    event.preventDefault();
  });
});