*/
public function preProcess() {
$this->_sid = CRM_Utils_Request::retrieve('sid', 'Positive', $this, FALSE, NULL, 'REQUEST');
$this->_fid = CRM_Utils_Request::retrieve('fid', 'Positive', $this, FALSE, NULL, 'REQUEST');
*/
public function preProcess() {
$this->_sid = CRM_Utils_Request::retrieve('sid', 'Positive', $this, FALSE, NULL, 'REQUEST');
$this->_fid = CRM_Utils_Request::retrieve('fid', 'Positive', $this, FALSE, NULL, 'REQUEST');