head.php에서 코딩을 보다가 수정을 할려고 하는데요..

평상시엔 메뉴에   관리자모드에서 만든 대메뉴1(그룹명gr1)만 나오는 상태입니다.

대메뉴2(그룹명gr2) 하나 더 만들었습니다.

관리자로 로그인했을때만 ▶대메뉴2(그룹명gr2)도 출력되게 하려고 합니다.

아래코드의 어떻게 고쳐야 되는지... 팁을 찾아봐도 어렵네요..도움좀 부탁드립니다.^^;

head.php속에 메뉴출력하는 부분이에요.

                    <?php
                $sql = " select *
                            from {$g5['menu_table']}
                            where me_mobile_use = '1'
                              and length(me_code) = '2'
                            order by me_order, me_id ";
                $result = sql_query($sql, false);

                for($i=0; $row=sql_fetch_array($result); $i++) {
                ?>
                    <li class="gnb_1dli" style="z-index:<?php echo $gnb_zindex--; ?>">
                        <?php
                        $submenus = '';

                        $sql2 = " select *
                                    from {$g5['menu_table']}
                                    where me_mobile_use = '1'
                                      and length(me_code) = '4'
                                      and substring(me_code, 1, 2) = '{$row['me_code']}'
                                    order by me_order, me_id ";
                        $result2 = sql_query($sql2);

                        for ($k=0; $row2=sql_fetch_array($result2); $k++) {
                            if($k == 0)
                               $submenus .= '<button type="button" class="gnb_op">하위메뉴</button><ul class="gnb_2dul">'.PHP_EOL;

                            $submenus .= '<li class="gnb_2dli"><a href="'.$row2['me_link'].'" target="_'.$row2['me_target'].'" class="gnb_2da">'.$row2['me_name'].'</a></li>'.PHP_EOL;
                        }

                        if($k > 0)
                            $submenus .= '</ul>'.PHP_EOL;

                        if($submenus)
                            $gnb_class = 'gnb_1da gnb_bg';
                        else
                            $gnb_class = 'gnb_1da';
                        ?>
                        <a href="<?php echo $row['me_link']; ?>" target="_<?php echo $row['me_target']; ?>" class="<?php echo $gnb_class; ?>"><?php echo $row['me_name'] ?></a>
                        <?php echo $submenus; ?>
                    </li>
                <?php
                }

                if ($i == 0) {  ?>
                    <li id="gnb_empty">메뉴 준비 중입니다.<?php if ($is_admin) { ?> <br><a href="<?php echo G5_ADMIN_URL; ?>/menu_list.php">관리자모드 > 환경설정 > 메뉴설정</a>에서 설정하세요.<?php } ?></li>
                <?php } ?>