카테고리 분류 되게는 했는데~ 카테고리 클릭시 분류가 안되는 부분 어떻게 해야 하나요?

고수님들의 조언 부탁드립니다.ㅠㅠ

<!-- 게시판 목록 시작 { -->

<?php if ($is_admin) { ?>

    <!-- 게시판 페이지 정보 및 버튼 시작 { -->

<div class="bo_fx checkbox">

<?php if ($is_checkbox) { ?>

<div id="bo_list_total">

<label for="chkall" class="sound_only">현재 페이지 게시물 전체</label>

            <input type="checkbox" id="chkall" onclick="if (this.checked) all_checked(true); else all_checked(false);">

            전체선택

</div>

<?php } ?>

<?php if ($rss_href || $write_href) { ?>

<ul class="btn_bo_user">

<?php if ($admin_href) { ?><li><a href="<?php echo $admin_href ?>" class="btn_admin">관리자</a></li><?php } ?>

</ul>

<?php } ?>

</div>

<!-- } 게시판 페이지 정보 및 버튼 끝 -->

<?php } ?>

<!-- 게시판 카테고리 시작 { -->

<?php if ($is_category) { ?>

<nav id="bo_cate">

<h2><?php echo $board['bo_subject'] ?> 카테고리</h2>

<ul id="bo_cate_ul">

<?php echo $category_option ?>

</ul>

</nav>

<?php } ?>

<form name="fboardlist" id="fboardlist" action="./board_list_update.php" onsubmit="return fboardlist_submit(this);" method="post">

<input type="hidden" name="bo_table" value="<?php echo $bo_table ?>">

<input type="hidden" name="sfl" value="<?php echo $sfl ?>">

<input type="hidden" name="stx" value="<?php echo $stx ?>">

<input type="hidden" name="spt" value="<?php echo $spt ?>">

<input type="hidden" name="sca" value="<?php echo $sca ?>">

<input type="hidden" name="sst" value="<?php echo $sst ?>">

<input type="hidden" name="sod" value="<?php echo $sod ?>">

<input type="hidden" name="page" value="<?php echo $page ?>">

<input type="hidden" name="sw" value="">

<div id="bo_list" style="width:<?php echo $width; ?>">

    <?

    $sql = "select * from ".$write_table." where wr_is_comment = '0' group by wr_subject order by wr_subject desc";

    $result = sql_query($sql);

    for ($i=0; $history_y=sql_fetch_array($result); $i++) {

    ?>

        <div class="list_year">

        <?php echo $history_y[wr_subject]?>

            <?

            $sql2 = "select * from ".$write_table." where wr_is_comment = '0' and wr_subject = '{$history_y[wr_subject]}' order by wr_1 desc";

            $result2 = sql_query($sql2);

            for ($i=0; $history_m=sql_fetch_array($result2); $i++) {

            ?>

            <div class="mc_con">

                <div class="list_month"><?php echo $history_m[wr_1]?></div>

                <div class="list_content">

                    <?php echo nl2br($history_m[wr_content]);?>

                     <?php if ($is_admin) { ?>

                        <a href="<?php echo G5_BBS_URL?>/write.php?w=u&bo_table=<?php echo $bo_table?>&wr_id=<?php echo $history_m[wr_id]?>" class="m_btn">M</a>

                        <label for="chk_wr_id_<?php echo $i ?>" class="sound_only"><?php echo $history_m['wr_subject'] ?></label>

                        <input type="checkbox" name="chk_wr_id[]" value="<?php echo $history_m['wr_id'] ?>" id="chk_wr_id_<?php echo $i ?>">

                    <?php } ?>  

                </div>

            </div>

            <?php } ?>

        </div>

    <?php } ?>

</div>

<?php if ($list_href || $is_checkbox || $write_href) { ?>

<div class="bo_fx">

<?php if ($is_checkbox) { ?>

<ul class="btn_bo_adm">

<li><input type="submit" name="btn_submit" value="선택삭제" onclick="document.pressed=this.value"></li>

</ul>

<?php } ?>