옆의 체크박스를 선택하고 선택삭제를 눌러도 삭제 팝업은 뜨는데 눌러도 반응이 없습니다. 혹시 제가 리스트 내용을 바꾸면서 잘못 건드린게 있을까요?
고수님들의 답변 부탁드립니다.

해당 부분 코드는 다음과 같습니다.

<?php
$sub_menu = "200100";
include_once('./_common.php');

auth_check_menu($auth, $sub_menu, 'r');

$sql_common = " from {$g5['member_table']} ";

$sql_search = " where (1) ";
if ($stx) {
    $sql_search .= " and ( ";
    switch ($sfl) {
        case 'mb_point' :
            $sql_search .= " ({$sfl} >= '{$stx}') ";
            break;
        case 'mb_level' :
            $sql_search .= " ({$sfl} = '{$stx}') ";
            break;
        case 'mb_tel' :
        case 'mb_hp' :
            $sql_search .= " ({$sfl} like '%{$stx}') ";
            break;
        default :
            $sql_search .= " ({$sfl} like '{$stx}%') ";
            break;
    }
    $sql_search .= " ) ";
}

if ($is_admin != 'super')
    $sql_search .= " and mb_level <= '{$member['mb_level']}' ";

if (!$sst) {
    $sst = "mb_datetime";
    $sod = "desc";
}

$sql_order = " order by {$sst} {$sod} ";

$sql = " select count(*) as cnt {$sql_common} {$sql_search} {$sql_order} ";
$row = sql_fetch($sql);
$total_count = $row['cnt'];

$rows = $config['cf_page_rows'];
$total_page  = ceil($total_count / $rows);  // 전체 페이지 계산
if ($page < 1) $page = 1; // 페이지가 없으면 첫 페이지 (1 페이지)
$from_record = ($page - 1) * $rows; // 시작 열을 구함

// 탈퇴회원수
$sql = " select count(*) as cnt {$sql_common} {$sql_search} and mb_leave_date <> '' {$sql_order} ";
$row = sql_fetch($sql);
$leave_count = $row['cnt'];

// 차단회원수
$sql = " select count(*) as cnt {$sql_common} {$sql_search} and mb_intercept_date <> '' {$sql_order} ";
$row = sql_fetch($sql);
$intercept_count = $row['cnt'];

$listall = '<a href="'.$_SERVER['SCRIPT_NAME'].'" class="ov_listall">전체목록</a>';

$g5['title'] = '회원관리';
include_once('./admin.head.php');

$sql = " select * {$sql_common} {$sql_search} {$sql_order} limit {$from_record}, {$rows} ";
$result = sql_query($sql);

$colspan = 16;
?>

<div class="local_ov01 local_ov">
    <?php echo $listall ?>
    <span class="btn_ov01"><span class="ov_txt">총회원수 </span><span class="ov_num"> <?php echo number_format($total_count) ?>명 </span></span>
    <a href="?sst=mb_intercept_date&sod=desc&sfl=<?php echo $sfl ?>&stx=<?php echo $stx ?>" class="btn_ov01" data-tooltip-text="차단된 순으로 정렬합니다. 전체 데이터를 출력합니다."> <span class="ov_txt">차단 </span><span class="ov_num"><?php echo number_format($intercept_count) ?>명</span></a>
    <a href="?sst=mb_leave_date&sod=desc&sfl=<?php echo $sfl ?>&stx=<?php echo $stx ?>" class="btn_ov01" data-tooltip-text="탈퇴된 순으로 정렬합니다. 전체 데이터를 출력합니다."> <span class="ov_txt">탈퇴  </span><span class="ov_num"><?php echo number_format($leave_count) ?>명</span></a>
</div>

<form id="fsearch" name="fsearch" class="local_sch01 local_sch" method="get">

<label for="sfl" class="sound_only">검색대상</label>
<select name="sfl" id="sfl">
    <option value="mb_id"<?php echo get_selected($sfl, "mb_id"); ?>>회원아이디</option>
    <option value="mb_nick"<?php echo get_selected($sfl, "mb_nick"); ?>>닉네임</option>
    <option value="mb_name"<?php echo get_selected($sfl, "mb_name"); ?>>이름</option>
    <option value="mb_level"<?php echo get_selected($sfl, "mb_level"); ?>>권한</option>
    <option value="mb_email"<?php echo get_selected($sfl, "mb_email"); ?>>E-MAIL</option>
    <option value="mb_tel"<?php echo get_selected($sfl, "mb_tel"); ?>>전화번호</option>
    <option value="mb_hp"<?php echo get_selected($sfl, "mb_hp"); ?>>휴대폰번호</option>
    <option value="mb_point"<?php echo get_selected($sfl, "mb_point"); ?>>포인트</option>
    <option value="mb_datetime"<?php echo get_selected($sfl, "mb_datetime"); ?>>가입일시</option>
    <option value="mb_ip"<?php echo get_selected($sfl, "mb_ip"); ?>>IP</option>
    <option value="mb_recommend"<?php echo get_selected($sfl, "mb_recommend"); ?>>추천인</option>
</select>
<label for="stx" class="sound_only">검색어<strong class="sound_only"> 필수</strong></label>
<input type="text" name="stx" value="<?php echo $stx ?>" id="stx" required class="required frm_input">
<input type="submit" class="btn_submit" value="검색">

</form>

<div class="local_desc01 local_desc">
    <p>
        회원자료 삭제 시 다른 회원이 기존 회원아이디를 사용하지 못하도록 회원아이디, 이름, 닉네임은 삭제하지 않고 영구 보관합니다.
    </p>
</div>

<form name="fmemberlist" id="fmemberlist" action="./member_list_update.php" onsubmit="return fmemberlist_submit(this);" method="post">
<input type="hidden" name="sst" value="<?php echo $sst ?>">
<input type="hidden" name="sod" value="<?php echo $sod ?>">
<input type="hidden" name="sfl" value="<?php echo $sfl ?>">
<input type="hidden" name="stx" value="<?php echo $stx ?>">
<input type="hidden" name="page" value="<?php echo $page ?>">
<input type="hidden" name="token" value="">

<div class="tbl_head01 tbl_wrap">
    <table>
    <caption><?php echo $g5['title']; ?> 목록</caption>
    <thead>
    <tr>
        <th scope="col" id="mb_list_chk" rowspan="2" >
            <label for="chkall" class="sound_only">회원 전체</label>
            <input type="checkbox" name="chkall" value="1" id="chkall" onclick="check_all(this.form)">
        </th>
        <th scope="col" id="mb_list_id" colspan="2"><?php echo subject_sort_link('mb_id') ?>아이디</a></th>
<!--        <th scope="col" rowspan="2" id="mb_list_cert"><?php echo subject_sort_link('mb_certify', '', 'desc') ?>본인확인</a></th>-->
       <th scope="col" rowspan="2" id="mb_list_mobile">휴대폰</th>
        <th scope="col"rowspan="2"  id="mb_list_join"><?php echo subject_sort_link('mb_datetime', '', 'desc') ?>가입일</a></th>
        <th scope="col" rowspan="2"  id="mb_list_point"><?php echo subject_sort_link('mb_point', '', 'desc') ?> 질문<br>가능횟수</a></th>
        <th scope="col"rowspan="2"  id="mb_list_summary">질문<br>등록수</th>
        <th scope="col"rowspan="2"  id="mb_list_visit"> <?php echo subject_sort_link('mb_visit_count', '', 'desc') ?>방문횟수 </a></th>
        <th scope="col" rowspan="2"  id="mb_list_recom"> 추천인(초대회원) 아이디 </th>
        <th scope="col" rowspan="2" id="mb_list_mailr"><?php echo subject_sort_link('mb_mailling', '', 'desc') ?>메일수신</a></th>
        <th scope="col" rowspan="2" id="mb_list_auth"><?php echo subject_sort_link('mb_intercept_date', '', 'desc') ?>접근차단</a></th>
        <th scope="col" rowspan="2"  id="mb_list_auth">상태</th>
        <th scope="col" rowspan="2" id="mb_list_deny"><?php echo subject_sort_link('mb_level', '', 'desc') ?>권한</a><br>관리자는 10레벨</th>

        
        <th scope="col" rowspan="2"  id="mb_list_lastcall"><?php echo subject_sort_link('mb_today_login', '', 'desc') ?>최종접속</a></th>
        
        <th scope="col" rowspan="2" id="mb_list_mng">관리</th>
    </tr>
    <tr>
        <th scope="col" id="mb_list_name"><?php echo subject_sort_link('mb_name') ?>이름</a></th>
        <th scope="col" id="mb_list_nick">질문관리</th>
<!--        <th scope="col" id="mb_list_grp">접근그룹</th>-->

<!--        <th scope="col" id="mb_list_tel">전화번호</th>-->

    </tr>
    </thead>
    <tbody>
    <?php
    for ($i=0; $row=sql_fetch_array($result); $i++) {
        // 접근가능한 그룹수
        $sql2 = " select count(*) as cnt from {$g5['group_member_table']} where mb_id = '{$row['mb_id']}' ";
        $row2 = sql_fetch($sql2);
        $group = '';
        if ($row2['cnt'])
            $group = '<a href="./boardgroupmember_form.php?mb_id='.$row['mb_id'].'">'.$row2['cnt'].'</a>';

        if ($is_admin == 'group') {
            $s_mod = '';
        } else {
            $s_mod = '<a href="./member_form.php?'.$qstr.'&w=u&mb_id='.$row['mb_id'].'" class="btn btn_03">상세</a>';
        }
        $s_grp = '<a href="./boardgroupmember_form.php?mb_id='.$row['mb_id'].'" class="btn btn_02">그룹</a>';

        $leave_date = $row['mb_leave_date'] ? $row['mb_leave_date'] : date('Ymd', G5_SERVER_TIME);
        $intercept_date = $row['mb_intercept_date'] ? $row['mb_intercept_date'] : date('Ymd', G5_SERVER_TIME);

        $mb_nick = get_sideview($row['mb_id'], get_text($row['mb_nick']), $row['mb_email'], $row['mb_homepage']);

        $mb_id = $row['mb_id'];
        $leave_msg = '';
        $intercept_msg = '';
        $intercept_title = '';
        if ($row['mb_leave_date']) {
            $mb_id = $mb_id;
            $leave_msg = '<span class="mb_leave_msg">탈퇴함</span>';
        }
        else if ($row['mb_intercept_date']) {
            $mb_id = $mb_id;
            $intercept_msg = '<span class="mb_intercept_msg">차단됨</span>';
            $intercept_title = '차단해제';
        }
        if ($intercept_title == '')
            $intercept_title = '차단하기';

        $address = $row['mb_zip1'] ? print_address($row['mb_addr1'], $row['mb_addr2'], $row['mb_addr3'], $row['mb_addr_jibeon']) : '';

        $bg = 'bg'.($i%2);

        switch($row['mb_certify']) {
            case 'hp':
                $mb_certify_case = '휴대폰';
                $mb_certify_val = 'hp';
                break;
            case 'ipin':
                $mb_certify_case = '아이핀';
                $mb_certify_val = '';
                break;
            case 'admin':
                $mb_certify_case = '관리자';
                $mb_certify_val = 'admin';
                break;
            default:
                $mb_certify_case = ' ';
                $mb_certify_val = 'admin';
                break;
        }
    ?>

    <tr class="<?php echo $bg; ?>">
        <td headers="mb_list_chk" class="td_chk" rowspan="2">
            <input type="hidden" name="mb_id[<?php echo $i ?>]" value="<?php echo $row['mb_id'] ?>" id="mb_id_<?php echo $i ?>">
            <label for="chk_<?php echo $i; ?>" class="sound_only"><?php echo get_text($row['mb_name']); ?> <?php echo get_text($row['mb_nick']); ?>님</label>
            <input type="checkbox" name="chk[]" value="<?php echo $i ?>" id="chk_<?php echo $i ?>">
        </td>
        <td headers="mb_list_id" colspan="2" class="td_name sv_use">           
            <?php
            //소셜계정이 있다면
            if(function_exists('social_login_link_account')){
                if( $my_social_accounts = social_login_link_account($row['mb_id'], false, 'get_data') ){
                    
                    echo '<div class="member_social_provider sns-wrap-over sns-wrap-32">';
                    foreach( (array) $my_social_accounts as $account){     //반복문
                        if( empty($account) || empty($account['provider']) ) continue;
                        
                        $provider = strtolower($account['provider']);
                        $provider_name = social_get_provider_service_name($provider);
                        
                        echo '<span class="sns-icon sns-'.$provider.'" title="'.$provider_name.'">';
                        echo '<span class="ico"></span>';
                        echo '<span class="txt">'.$provider_name.'</span>';
                        echo '</span>';
                    }
                    echo '</div>';
                }
            }
            ?>
            <?php echo $mb_id ?>
        </td>
       <td headers="mb_list_mobile" rowspan="2" class="td_tel"><?php echo get_text($row['mb_hp']); ?></td>
        <td headers="mb_list_join" rowspan="2"  class="td_date"><?php echo substr($row['mb_datetime'],2,8); ?></td>
         <td headers="mb_list_point" rowspan="2" class="td_num"><a href="point_list.php?sfl=mb_id&stx=<?php echo $row['mb_id'] ?>"><?php echo number_format($row['mb_point']) ?></a></td>
         <td headers="mb_list_summaty" rowspan="2" class="td_num">
            <?php 
             $sql = "select count(*) as cnt from g5_write_qa where wr_is_comment='0' and mb_id = '{$row['mb_id']}'";
             $rowc = sql_fetch($sql);
             echo $rowc['cnt'];
             ?>
         </td>
         <td headers="mb_list_visit" rowspan="2" class="td_num">
             <?php 
             $sql2 = "select mb_visit_count from g5_member where mb_id = '{$row['mb_id']}'";
             $row2 = sql_fetch($sql2);
             echo $row2['mb_visit_count'];     
             ?>
         </td>
         <td rowspan="2" headers="mb_list_recom">
            <?php echo $row['mb_recommend']; ?>
        </td>
        <td rowspan="2" headers="mb_list_mailr">
            <label for="mb_mailling_<?php echo $i; ?>" class="sound_only">메일수신</label>
            <input type="checkbox" name="mb_mailling[<?php echo $i; ?>]" <?php echo $row['mb_mailling']?'checked':''; ?> value="1" id="mb_mailling_<?php echo $i; ?>">
        </td>
            
            <td rowspan="2" headers="mb_list_deny">
            <?php if(empty($row['mb_leave_date'])){ ?>
            <input type="checkbox" name="mb_intercept_date[<?php echo $i; ?>]" <?php echo $row['mb_intercept_date']?'checked':''; ?> value="<?php echo $intercept_date ?>" id="mb_intercept_date_<?php echo $i ?>" title="<?php echo $intercept_title ?>">
            <label for="mb_intercept_date_<?php echo $i; ?>" class="sound_only">접근차단</label>
            <?php } ?>
        </td>
         <td headers="mb_list_auth" rowspan="2" class="td_mbstat">
            <?php
            if ($leave_msg || $intercept_msg) echo $leave_msg.' '.$intercept_msg;
            else echo "정상";
            ?>
        </td>
        <td headers="mb_list_auth" rowspan="2" class="td_mbstat">
            레벨
            <?php echo get_member_level_select("mb_level[$i]", 1, $member['mb_level'], $row['mb_level']) ?>
        </td>
        <td rowspan="2" headers="mb_list_lastcall" class="td_date"><?php echo substr($row['mb_today_login'],2,8); ?></td>
        
        <td headers="mb_list_mng" rowspan="2" class="td_mng td_mng_s"><?php echo $s_mod ?></td>
    </tr>
    <tr class="<?php echo $bg; ?>">
        <td headers="mb_list_name" class="td_mbname"><?php echo get_text($row['mb_name']); ?></td>
        <td headers="mb_list_nick" class="td_name sv_use"><div><a href="<?php echo G5_BBS_URL;?>/board.php?bo_table=qa&sca=&sfl=mb_id,1&stx=<?php echo $row['mb_id']?>">질문관리</a></div></td>
<!--        <td headers="mb_list_grp" class="td_numsmall"><?php echo $group ?></td>-->
  

<!--        <td headers="mb_list_tel" class="td_tel"><?php echo get_text($row['mb_tel']); ?></td>-->
       

    </tr>

    <?php
    }
    if ($i == 0)
        echo "<tr><td colspan=\"".$colspan."\" class=\"empty_table\">자료가 없습니다.</td></tr>";
    ?>
    </tbody>
    </table>
</div>

<div class="btn_fixed_top">
    <input type="submit" name="act_button" value="선택수정" onclick="document.pressed=this.value" class="btn btn_02">
    <input type="submit" name="act_button" value="선택삭제" onclick="document.pressed=this.value" class="btn btn_02">
    <?php if ($is_admin == 'super') { ?>
    <a href="./member_form.php" id="member_add" class="btn btn_01">회원추가</a>
    <?php } ?>

</div>

</form>

<?php echo get_paging(G5_IS_MOBILE ? $config['cf_mobile_pages'] : $config['cf_write_pages'], $page, $total_page, '?'.$qstr.'&page='); ?>

<script>
function fmemberlist_submit(f)
{
    if (!is_checked("chk[]")) {
        alert(document.pressed+" 하실 항목을 하나 이상 선택하세요.");
        return false;
    }

    if(document.pressed == "선택삭제") {
        if(!confirm("선택한 자료를 정말 삭제하시겠습니까?")) {
            return false;
        }
    }

    return true;
}
</script>

<?php
include_once ('./admin.tail.php');

추가적으로 member_list_update.php 파일도 올려드립니다.
 

<?php
$sub_menu = "200100";
include_once('./_common.php');

check_demo();

if (! (isset($_POST['chk']) && is_array($_POST['chk']))) {
    alert($_POST['act_button']." 하실 항목을 하나 이상 체크하세요.");
}

auth_check_menu($auth, $sub_menu, 'w');

check_admin_token();

$mb_datas = array();
$msg = '';

if ($_POST['act_button'] == "선택수정") {

    for ($i=0; $i<count($_POST['chk']); $i++)
    {
        // 실제 번호를 넘김
        $k = isset($_POST['chk'][$i]) ? (int) $_POST['chk'][$i] : 0;
        
        $post_mb_certify = (isset($_POST['mb_certify'][$k]) && $_POST['mb_certify'][$k]) ? clean_xss_tags($_POST['mb_certify'][$k], 1, 1, 20) : '';
        $post_mb_level = isset($_POST['mb_level'][$k]) ? (int) $_POST['mb_level'][$k] : 0;
        $post_mb_intercept_date = (isset($_POST['mb_intercept_date'][$k]) && $_POST['mb_intercept_date'][$k]) ? clean_xss_tags($_POST['mb_intercept_date'][$k], 1, 1, 8) : '';
        $post_mb_mailling = isset($_POST['mb_mailling'][$k]) ? (int) $_POST['mb_mailling'][$k] : 0;
        $post_mb_sms = isset($_POST['mb_sms'][$k]) ? (int) $_POST['mb_sms'][$k] : 0;
        $post_mb_open = isset($_POST['mb_open'][$k]) ? (int) $_POST['mb_open'][$k] : 0;

        $mb_datas[] = $mb = get_member($_POST['mb_id'][$k]);

        if (! (isset($mb['mb_id']) && $mb['mb_id'])) {
            $msg .= $mb['mb_id'].' : 회원자료가 존재하지 않습니다.\\n';
        } else if ($is_admin != 'super' && $mb['mb_level'] >= $member['mb_level']) {
            $msg .= $mb['mb_id'].' : 자신보다 권한이 높거나 같은 회원은 수정할 수 없습니다.\\n';
        } else if ($member['mb_id'] == $mb['mb_id']) {
            $msg .= $mb['mb_id'].' : 로그인 중인 관리자는 수정 할 수 없습니다.\\n';
        } else {
            if($post_mb_certify)
                $mb_adult = isset($_POST['mb_adult'][$k]) ? (int) $_POST['mb_adult'][$k] : 0;
            else
                $mb_adult = 0;

            $sql = " update {$g5['member_table']}
                        set mb_level = '".$post_mb_level."',
                            mb_intercept_date = '".sql_real_escape_string($post_mb_intercept_date)."',
                            mb_mailling = '".$post_mb_mailling."',
                            mb_sms = '".$post_mb_sms."',
                            mb_open = '".$post_mb_open."',
                            mb_certify = '".sql_real_escape_string($post_mb_certify)."',
                            mb_adult = '{$mb_adult}'
                        where mb_id = '".sql_real_escape_string($mb['mb_id'])."' ";
            sql_query($sql);
        }
    }

} else if ($_POST['act_button'] == "선택삭제") {

    for ($i=0; $i<count($_POST['chk']); $i++)
    {
        // 실제 번호를 넘김
        $k = isset($_POST['chk'][$i]) ? (int) $_POST['chk'][$i] : 0;

        $mb_datas[] = $mb = get_member($_POST['mb_id'][$k]);

        if (!$mb['mb_id']) {
            $msg .= $mb['mb_id'].' : 회원자료가 존재하지 않습니다.\\n';
        } else if ($member['mb_id'] == $mb['mb_id']) {
            $msg .= $mb['mb_id'].' : 로그인 중인 관리자는 삭제 할 수 없습니다.\\n';
        } else if (is_admin($mb['mb_id']) == 'super') {
            $msg .= $mb['mb_id'].' : 최고 관리자는 삭제할 수 없습니다.\\n';
        } else if ($is_admin != 'super' && $mb['mb_level'] >= $member['mb_level']) {
            $msg .= $mb['mb_id'].' : 자신보다 권한이 높거나 같은 회원은 삭제할 수 없습니다.\\n';
        } else {
            // 회원자료 삭제
            member_delete($mb['mb_id']);
        }
    }
}

if ($msg)
    //echo '<script> alert("'.$msg.'"); </script>';
    alert($msg);

run_event('admin_member_list_update', $_POST['act_button'], $mb_datas);

goto_url('./member_list.php?'.$qstr);

전문가님들의 답변 부탁드립니다.