Formulario de suscripción para blogger en ventana emergente o pop-up

<link rel="stylesheet" href="https://cdn.rawgit.com/jmacuna/subscription-feedburner/master/style.css"> 

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-cookie/1.4.1/jquery.cookie.js"></script> 

<script>
idleTime = 0;
$(document).ready(function(){
 $limit = 5; //seconds
 if ($.cookie('test_status') != '1') {
  function timerIncrement() {
   idleTime = idleTime + 1;
   if (idleTime > $limit) {
    $('html, body').css('overflow', 'hidden');
    $('.subs-popup ').fadeIn('slow');
    idleTime = 0;
   }
  }
  // Increment the idle time counter every second.
  var idleInterval = setInterval(timerIncrement, 1000); // 1 second
  // Zero the idle timer on mouse movement.
  $(this).mousemove(function (e) {
   idleTime = 0;
  });
  $(this).keypress(function (e) {
   idleTime = 0;
  });
  $.cookie('test_status', '1', { expires: 30 });
 }
 $('.email-close').click(function() {
  $('.subs-popup').fadeOut('slow');
  $('html, body').css('overflow', 'auto');
  $limit = 9999;
 });
});
</script>

<div class="subs-popup"> 

<div id="newsletter"> 

<div class="email-close">X</div> 

<div class="newsletter-wrap"> 

<h4>Suscríbete y recibe<br/>contenido exclusivo</h4> 

<p>Las últimas novedades del blog<br/>directamente a tu email.<br/><br/></p> 

<form action="http://feedburner.google.com/fb/a/mailverify?loc=es-ES&uri=[FEED_DE_TU_BLOG]" method="post" onsubmit="$('.email-close').click();window.open('about:blank', 'popupwindow', 'scrollbars=yes,width=550,height=520');return true" target="popupwindow" novalidate="">

<input name="uri" type="hidden" value="bloggertrix"/> 

<input name="loc" type="hidden" value="en_ES"/> 

<input type="email" value="" name="email" placeholder="Tu e-mail aqui..." required=""/><br/><br/> 

<input type="submit" value="Suscribirme" class="button-popup"> 

</form>
  </div>
 </div>
</div>