/**
 * Hidden topic
 * by Stanislav Nevolin, stanislav@nevolin.info
 */
var hiddenTopicShowing = function(event) {
    event.stop();
    this.removeClass('hidden_topic');
    this.removeEvent('click', hiddenTopicShowing);
}
window.addEvent('domready', function() {
  $$('div.hidden_topic').addEvent('click', hiddenTopicShowing);
});