var poll = $('poll');
if (poll) {
  Event.observe(poll, 'submit', function(e) {
    e.stop();
    var poll_id = poll.readAttribute('data-poll-id');
    var answer = 0;
    poll.getInputs('radio', 'answer').each(function(el, i) {
      if (el.checked) answer = i+1;
    });
    if (answer == 0) return;
    new Ajax.Request( window.location.protocol+'//'+window.location.host+'/ajax_umfrage_antwort.php', {
      parameters: { id: poll_id, antwort: answer },
      onLoading: function() {
        poll.makePositioned().update('<img src="'+window.location.protocol+'//'+window.location.host+'/bilder/ps_loader.gif" alt="" style="position:absolute;top:50%;left:50%" />');
      },
      onSuccess: function(transport) {
        poll.update(transport.responseText);
      },
      onFailure: function() {
        poll.update('Fehler beim Laden');
      }
    });
  });
}