if ($this->_direction == 'vertical') {
                foreach ($this->_items as $item) {
                    $this->_XHTML.= "<tr>\n";
                    $this->_XHTML.= " <td valign=\"top\">\n";
                    $item->rebuildJS();
                    $this->addJS($item->getJS());
                    $this->addFiles($item->getFiles());
                    $this->_XHTML.= $item->get(false);
                    $this->_XHTML.= " </td>\n";
                    $this->_XHTML.= "</tr>\n";
                }
            } else {
                $this->_XHTML.= "<tr>\n";
                foreach ($this->_items as $item) {
                    $this->_XHTML.= " <td valign=\"top\">\n";
                    $item->rebuildJS();
                    $this->addJS($item->getJS());
                    $this->addFiles($item->getFiles());
                    $this->_XHTML.= $item->get(false);
                    $this->_XHTML.= " </td>\n";
                }
                $this->_XHTML.= "</tr>\n";
            }