public function getBirthday(){
		if(isset($this->_userInfo['birthday'])) {
			$this->_userInfo['birthday'] = str_replace('0000', date('Y'), $this->_userInfo['birthday']);
			$result = date('d.m.Y', strtotime($this->_userInfo['birthday']));
			}
		else {
			$result = null;
			}
		return $result;
		}