답변 감사드립니다

1번은 해결했습니다.
2번은 수정했는데도 실명이 뜨네요-.-
3번은 해결했습니다.

해주신 김에
4.5번 수정부탁드립니다

잘부탁드립니다.


/skin/new/basic/new.skin.php
의 내용은 아래와 같습니다.


<?php
if (!defined("_GNUBOARD_")) exit; // 개별 페이지 접근 불가

// 선택삭제으로 인해 셀합치기가 가변적으로 변함
$colspan = 5;

if ($is_admin) $colspan++;

// add_stylesheet('css 구문', 출력순서); 숫자가 작을 수록 먼저 출력됨
add_stylesheet('<link rel="stylesheet" href="'.$new_skin_url.'/style.css">', 0);
?>

<!-- 전체게시물 목록 시작 { -->
<form name="fnewlist" id="fnewlist" method="post" action="#" onsubmit="return fnew_submit(this);">
<input type="hidden" name="sw"      value="move">
<input type="hidden" name="view"    value="<?php echo $view; ?>">
<input type="hidden" name="sfl"      value="<?php echo $sfl; ?>">
<input type="hidden" name="stx"      value="<?php echo $stx; ?>">
<input type="hidden" name="bo_table" value="<?php echo $bo_table; ?>">
<input type="hidden" name="page"    value="<?php echo $page; ?>">
<input type="hidden" name="pressed"  value="">

<?php if ($is_admin) { ?>
<div class="admin_new_btn">
    <button type="submit" onclick="document.pressed=this.title" title="선택삭제" class="btn_b01 btn"><i class="fa fa-trash-o" aria-hidden="true"></i><span class="sound_only">선택삭제</span></button>
</div>
<?php } ?>
<div class="tbl_head01 tbl_wrap">
    <table>
    <thead>
    <tr>
        <?php if ($is_admin) { ?>
        <th scope="col" class="chk_box">
        <input type="checkbox" id="all_chk" class="selec_chk">
            <label for="all_chk">
            <span></span>
<b class="sound_only">목록 전체</b>
            </label>
        </th>
        <?php } ?>
        <th scope="col">그룹</th>
        <th scope="col">게시판</th>
        <th scope="col">제목</th>
        <th scope="col">이름</th>
        <th scope="col">일시</th>
    </tr>
    </thead>
    <tbody>
    <?php
    for ($i=0; $i<count($list); $i++)
    {
        $num = $total_count - ($page - 1) * $config['cf_page_rows'] - $i;
        $gr_subject = cut_str($list[$i]['gr_subject'], 20);
        $bo_subject = cut_str($list[$i]['bo_subject'], 20);
        $wr_subject = get_text(cut_str($list[$i]['wr_subject'], 80));
    ?>
    <tr>
        <?php if ($is_admin) { ?>
        <td class="td_chk chk_box">
            <input type="checkbox" name="chk_bn_id[]" value="<?php echo $i; ?>" id="chk_bn_id_<?php echo $i; ?>" class="selec_chk">
            <label for="chk_bn_id_<?php echo $i; ?>">
            <span></span>
            <b class="sound_only"><?php echo $num?>번</b>
            </label>
            <input type="hidden" name="bo_table[<?php echo $i; ?>]" value="<?php echo $list[$i]['bo_table']; ?>">
            <input type="hidden" name="wr_id[<?php echo $i; ?>]" value="<?php echo $list[$i]['wr_id']; ?>">
        </td>
        <?php } ?>
        <td class="td_group"><a href="./new.php?gr_id=<?php echo $list[$i]['gr_id'] ?>"><?php echo $gr_subject ?></a></td>
        <td class="td_board"><a href="<?php echo get_pretty_url($list[$i]['bo_table']); ?>"><?php echo $bo_subject ?></a></td>
        <td><a href="<?php echo $list[$i]['href'] ?>" class="new_tit"><?php echo $list[$i]['comment'] ?><?php echo $wr_subject ?></a></td>
        <td class="td_name"><?php echo $list[$i]['name'] ?></td>
        <td class="td_date"><?php echo $list[$i]['datetime2'] ?></td>
    </tr>
    <?php }  ?>

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

<?php echo $write_pages ?>

<?php if ($is_admin) { ?>
<div class="admin_new_btn">
    <button type="submit" onclick="document.pressed=this.title" title="선택삭제" class="btn_b01 btn"><i class="fa fa-trash-o" aria-hidden="true"></i><span class="sound_only">선택삭제</span></button>
</div>
<?php } ?>
</form>

<?php if ($is_admin) { ?>
<script>
$(function(){
    $('#all_chk').click(function(){
        $('[name="chk_bn_id[]"]').attr('checked', this.checked);
    });
});

function fnew_submit(f)
{
    f.pressed.value = document.pressed;

    var cnt = 0;
    for (var i=0; i<f.length; i++) {
        if (f.elements[i].name == "chk_bn_id[]" && f.elements[i].checked)
            cnt++;
    }

    if (!cnt) {
        alert(document.pressed+"할 게시물을 하나 이상 선택하세요.");
        return false;
    }

    if (!confirm("선택한 게시물을 정말 "+document.pressed+" 하시겠습니까?\n\n한번 삭제한 자료는 복구할 수 없습니다")) {
        return false;
    }

    f.action = "./new_delete.php";

    return true;
}
</script>
<?php } ?>
<!-- } 전체게시물 목록 끝 -->

style.css 내용은 다음과 같습니다.

@charset "utf-8";

/* 최근게시물 스킨 (new) */
#new_sch {background:#f7f7f7;padding:30px;text-align:center;margin:0 0 10px}
#new_sch legend {position:absolute;margin:0;padding:0;font-size:0;line-height:0;text-indent:-9999em;overflow:hidden}
#new_sch select {border:1px solid #d0d3db;width:175px;height:45px;padding:0 5px;border-radius:3px}
#new_sch .frm_input {border:1px solid #d0d3db;width:300px;height:45px;border-radius:0;border-radius:3px}
#new_sch .sch_wr {position:relative;display:inline-block}
#new_sch .btn_submit {padding:0 10px;height:45px;width:88px;font-size:1.083em;font-weight:bold;color:#fff;background:#434a54}
#new_sch p {padding:10px 0 0;font-size:0.95em;text-align:center;letter-spacing:-0.1em}

#fnewlist .profile_img img {border-radius:50%}
#fnewlist .td_group a {background:#edfbde;color:#8cc152;padding:3px 4px;border-radius:5px;font-weight:normal}
#fnewlist .td_board a {background:#eeeaf8;color:#ac92ec;padding:3px 4px;border-radius:5px;font-weight:normal}

.admin_new_btn {float:right;margin-bottom:10px}

.selec_chk {position:absolute;top:0;left:0;width:0;height:0;opacity:0;outline:0;z-index:-1;overflow:hidden}
.chk_box input[type="checkbox"] + label {position:relative;padding-left:20px;color:#676e70}
.chk_box input[type="checkbox"] + label:hover {color:#2172f8}
.chk_box input[type="checkbox"] + label span {position:absolute;top:2px;left:0;width:15px;height:15px;display:block;margin:0;background:#fff;border:1px solid #d0d4df;border-radius:3px}
.chk_box input[type="checkbox"]:checked + label {color:#000}
.chk_box input[type="checkbox"]:checked + label span {background:url(./img/chk.png) no-repeat 50% 50% #3a8afd;border-color:#1471f6;border-radius:3px}