public function check_pswd($username,$password) {
            $password = md5($password);

            $query = 'SELECT * FROM users WHERE username=\''.$username.'\'';
            if ($check = mysql_query($query);

            $info = mysql_fetch_array($check);
            $sql_pswd = $info['password'];

            if($password != $sql_pswd) {
                return false;
            } else {
                return true;
            }
        }