function checkPart(wannaAjax) {
  if ($('cond').checked) {
    if (wannaAjax) {
      new Ajax.Updater('contentLayer', '/partecipated', {
        onComplete: function() {
          myLightWindow._setupActions();
          $('contentLayer').removeClassName('big');
          $$('#lightwindow_container','#lightwindow_contents').invoke('setStyle', {'height': '284px'});
        }
      });
    } else {
    }
  } else {
    $('cond').next('span').setStyle({'color': '#BC3837'});
    return false;
  }
}