protected function _toHtml()
{
if (is_array($this->_crumbs)) {
reset($this->_crumbs);
$this->_crumbs[key($this->_crumbs)]['first'] = true;
end($this->_crumbs);
$this->_crumbs[key($this->_crumbs)]['last'] = true;
}
$this->assign('crumbs', $this->_crumbs);
return parent::_toHtml();
}
