메뉴 활성화 질문

<ul id="gnb">  $sql = " select *     from {$g5['menu_table']}     where me_use = '1'       and length(me_code) = '2'     order by me_order, me_id ";  $result = sql_query($sql, false);  $gnb_zindex = 999; // gnb_1dli z-index 값 설정용  for ($i=0; $row=sql_fetch_array($result); $i++) {  ?>  <li class="gnb_1dli<?php echo $i; ?>">    <a href="<?php echo $row['me_link']; ?>" target="_<?php echo $row['me_target']; ?>"><?php echo $row['me_name'] ?></a>   <?php   $sql2 = " select *      from {$g5['menu_table']}      where me_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)     echo '<ul class="gnb_2dul">'.PHP_EOL;   ?>    <li class="gnb_2dli<?php echo $k; ?>"><a href="<?php echo $row2['me_link']; ?>" target="_<?php echo $row2['me_target']; ?>"><?php echo $row2['me_name'] ?></a></li>   <?php   }   if($k > 0)    echo '</ul>'.PHP_EOL;   ?>  </li>  <?php } ?> </ul>​