nt();

                while (el.attr("class") !== cls) {
                    el.find('> ul').show();
                    if(el.prop("tagName") === 'UL') {
                        el.show();
                    } else if (el.prop("tagName") === 'LI') {
                        el.removeClass('tree-closed');
                        el.addClass("tree-opened");
                        el.show();
                    }

                    el = el.parent();
                }
            });
        }

        ret