$this->_action = CRM_Utils_Request::retrieve('action', 'String', $this, FALSE, 'browse');
$this->_id = CRM_Utils_Request::retrieve('id', 'Positive', $this);
$this->_action = CRM_Utils_Request::retrieve('action', 'String', $this, FALSE, 'browse');
$this->_id = CRM_Utils_Request::retrieve('id', 'Positive', $this);