diff --git a/adm/auth_list.php b/adm/auth_list.php
index 462ee10ae..30150b3f1 100644
--- a/adm/auth_list.php
+++ b/adm/auth_list.php
@@ -69,8 +69,7 @@ var list_delete_php = 'auth_list_delete.php';
         <?=$listall?>
         설정된 관리권한 <?=number_format($total_count)?>건
     </span>
-    <label for="stx">회원아이디</label>
-    <input type="text" id="stx" name="stx" required value="<?=$stx?>">
+    <input type="text" id="stx" name="stx" class="required" required value="<?=$stx?>" title="회원아이디(필수)">
     <input type="submit" id="fsearch_submit" class="fieldset_submit" value="검색">
 </fieldset>
 </form>
@@ -168,10 +167,10 @@ else
 <fieldset>
     <legend>관리권한 추가</legend>
     <p>다음 양식에서 회원에게 관리권한을 부여하실 수 있습니다.</p>
-    <label for="mb_id">회원아이디</label>
-    <input type="text" id="mb_id" name="mb_id" required value='<?=$mb_id?>'>
-    <label for="au_menu">접근가능메뉴</label>
-    <select id="au_menu" name="au_menu" required>
+    <label for="mb_id">회원아이디<strong class="sound_only">필수</strong></label>
+    <input type="text" id="mb_id" name="mb_id" required value="<?=$mb_id?>" title="회원아이디">
+    <label for="au_menu">접근가능메뉴<strong class="sound_only">필수</strong></label>
+    <select id="au_menu" name="au_menu" required title="접근가능메뉴">
         <option value=''>선택하세요
         <?
         foreach($auth_menu as $key=>$value)
@@ -189,7 +188,7 @@ else
     <label for="d">d (삭제)</label>
     <p>관리자 권한을 탈취당하는 경우를 대비하여 패스워드를 다시 한번 확인합니다.</p>
     <label for="admin_password">관리자 패스워드</label>
-    <input type="password" id="admin_password" name="admin_password" required>
+    <input type="password" id="admin_password" name="admin_password" class="required" required title="관리자 패스워드">
     <input type="submit" class="fieldset_submit" value="완료">
 </fieldset>
 
diff --git a/adm/board_copy.php b/adm/board_copy.php
index cbb479fd8..8b96afec0 100644
--- a/adm/board_copy.php
+++ b/adm/board_copy.php
@@ -22,12 +22,12 @@ include_once($g4['path'].'/head.sub.php');
     <td><?=$bo_table?></td>
 </tr>
 <tr>
-    <th scope="col"><label for="target_table">복사 테이블명</label></th>
-    <td><input type="text" id="target_table" name="target_table" maxlength="20" class="required alnum_" required="required" title="복사할 TABLE"> 영문자, 숫자, _ 만 가능 (공백없이)</td>
+    <th scope="col"><label for="target_table">복사 테이블명<strong class="sound_only">필수</strong></label></th>
+    <td><input type="text" id="target_table" name="target_table" maxlength="20" class="required alnum_" required title="복사할 TABLE"> 영문자, 숫자, _ 만 가능 (공백없이)</td>
 </tr>
 <tr>
-    <th scope="col"><label for="target_subject">게시판 제목</label></th>
-    <td><input type="text" id="target_subject" name="target_subject" maxlength="120" value="[복사본] <?=$board['bo_subject']?>" required="required" title="게시판 제목"></td>
+    <th scope="col"><label for="target_subject">게시판 제목<strong class="sound_only">필수</strong></label></th>
+    <td><input type="text" id="target_subject" name="target_subject" maxlength="120" class="required" value="[복사본] <?=$board['bo_subject']?>" required title="게시판 제목"></td>
 </tr>
 <tr>
     <th scope="col">복사 유형</th>
diff --git a/adm/board_list.php b/adm/board_list.php
index 3c922116b..192aaef57 100644
--- a/adm/board_list.php
+++ b/adm/board_list.php
@@ -83,7 +83,7 @@ var list_delete_php = 'board_list_delete.php';
         <option value="bo_subject" <?=get_selected($_GET['sfl'], "bo_subject");?>>제목</option>
         <option value="a.gr_id" <?=get_selected($_GET['sfl'], "a.gr_id");?>>그룹ID</option>
     </select>
-    <input type="text" name="stx" required value="<?=$stx?>" title="검색어">
+    <input type="text" name="stx" class="required" required value="<?=$stx?>" title="검색어(필수)">
     <input type="submit" class="fieldset_submit" value="검색">
 </fieldset>
 </form>
diff --git a/adm/boardgroup_list.php b/adm/boardgroup_list.php
index edb72e299..f64458d92 100644
--- a/adm/boardgroup_list.php
+++ b/adm/boardgroup_list.php
@@ -77,8 +77,7 @@ var list_update_php = "./boardgroup_list_update.php";
         <option value="gr_id">ID</option>
         <option value="gr_admin">그룹관리자</option>
     </select>
-    <label for="stx">검색어</label>
-    <input type="text" id="stx" name="stx" required value="<?=$stx?>">
+    <input type="text" id="stx" name="stx" class="required" required value="<?=$stx?>" title="검색어(필수)">
     <input type="submit" class="fieldset_submit" value="검색">
 </fieldset>
 </form>
diff --git a/adm/boardgroupmember_list.php b/adm/boardgroupmember_list.php
index a541a3d7f..881d26503 100644
--- a/adm/boardgroupmember_list.php
+++ b/adm/boardgroupmember_list.php
@@ -65,7 +65,7 @@ $colspan = 7;
     <select id="sfl" name="sfl">
         <option value='a.mb_id'>회원아이디</option>
     </select>
-    <input type="text" id="stx" name="stx" required value="<? echo $stx ?>" title="검색어">
+    <input type="text" id="stx" name="stx" required value="<? echo $stx ?>" title="검색어(필수)">
     <input type="submit" class="fieldset_submit" value="검색">
 </fieldset>
 </form>
diff --git a/adm/config_form.php b/adm/config_form.php
index 57eaed134..7b72e6c54 100644
--- a/adm/config_form.php
+++ b/adm/config_form.php
@@ -45,9 +45,9 @@ include_once ('./admin.head.php');
 <caption>홈페이지 기본환경 설정</caption>
 <tbody>
 <tr>
-    <th scope="row"><label for="cf_title">홈페이지 제목</label></th>
-    <td><input type="text" id="cf_title" name="cf_title" class="required" value="<?=$config['cf_title']?>" size="50"></td>
-    <th scope="row"><label for="cf_admin">최고관리자</label></th>
+    <th scope="row"><label for="cf_title">홈페이지 제목<strong class="sound_only">필수</strong></label></th>
+    <td><input type="text" id="cf_title" name="cf_title" class="required" required value="<?=$config['cf_title']?>" size="50" title="홈페이지 제목"></td>
+    <th scope="row"><label for="cf_admin">최고관리자<strong class="sound_only">필수</strong></label></th>
     <td><?=get_member_id_select('cf_admin', 10, $config['cf_admin'], 'required')?></td>
 </tr>
 <tr>
@@ -55,15 +55,15 @@ include_once ('./admin.head.php');
     <td colspan="3"><input type="checkbox" id="cf_use_point" name="cf_use_point" value="1" <?=$config['cf_use_point']?'checked':'';?>> 사용</td>
 </tr>
 <tr>
-    <th scope="row"><label for="cf_login_point">로그인시 포인트</label></th>
+    <th scope="row"><label for="cf_login_point">로그인시 포인트<strong class="sound_only">필수</strong></label></th>
     <td>
         <?=help('회원에게 하루에 한번만 부여')?>
-        <input type="text" id="cf_login_point" name="cf_login_point" class="required" value="<?=$config['cf_login_point']?>" size="2"> 점
+        <input type="text" id="cf_login_point" name="cf_login_point" class="required" required value="<?=$config['cf_login_point']?>" size="2" title="로그인시 포인트"> 점
     </td>
-    <th scope="row"><label for="cf_memo_send_point">쪽지보낼시 차감 포인트</label></th>
+    <th scope="row"><label for="cf_memo_send_point">쪽지보낼시 차감 포인트<strong class="sound_only">필수</strong></label></th>
     <td>
          <?=help('양수로 입력하십시오. 0점은 쪽지 보낼시 포인트를 차감하지 않습니다.')?>
-        <input type="text" id="cf_memo_send_point" name="cf_memo_send_point" class="required" value="<?=$config['cf_memo_send_point']?>" size="2"> 점
+        <input type="text" id="cf_memo_send_point" name="cf_memo_send_point" class="required" required value="<?=$config['cf_memo_send_point']?>" size="2" title="쪽지보낼시 차감 포인트"> 점
     </td>
 </tr>
 <tr>
@@ -116,8 +116,8 @@ include_once ('./admin.head.php');
     </td>
 </tr>
 <tr>
-    <th scope="row"><label for="cf_new_skin">최근게시물 스킨</label></th>
-    <td><select id="cf_new_skin" name="cf_new_skin" class="required">
+    <th scope="row"><label for="cf_new_skin">최근게시물 스킨<strong class="sound_only">필수</strong></label></th>
+    <td><select id="cf_new_skin" name="cf_new_skin" class="required" required title="최근게시물 스킨">
         <?
         $arr = get_skin_dir('new');
         for ($i=0; $i<count($arr); $i++) {
@@ -133,8 +133,8 @@ include_once ('./admin.head.php');
     </td>
 </tr>
 <tr>
-    <th scope="row"><label for="cf_search_skin">검색 스킨</label></th>
-    <td colspan="3"><select id="cf_search_skin" name="cf_search_skin" class="required">
+    <th scope="row"><label for="cf_search_skin">검색 스킨<strong class="sound_only">필수</strong></label></th>
+    <td colspan="3"><select id="cf_search_skin" name="cf_search_skin" class="required" required title="검색 스킨">
         <?
         $arr = get_skin_dir("search");
         for ($i=0; $i<count($arr); $i++) {
@@ -145,8 +145,8 @@ include_once ('./admin.head.php');
     </td>
 </tr>
 <tr>
-    <th scope="row"><label for="cf_connect_skin">접속자 스킨</label></th>
-    <td colspan="3"><select id="cf_connect_skin" name="cf_connect_skin" class="required" >
+    <th scope="row"><label for="cf_connect_skin">접속자 스킨<strong class="sound_only">필수</strong></label></th>
+    <td colspan="3"><select id="cf_connect_skin" name="cf_connect_skin" class="required" required title="접속자 스킨">
         <?
         $arr = get_skin_dir('connect');
         for ($i=0; $i<count($arr); $i++) {
@@ -185,16 +185,16 @@ include_once ('./admin.head.php');
 </caption>
 <tbody>
 <tr>
-    <th scope="row"><label for="cf_read_point">글읽기 포인트</label></th>
-    <td><input type="text" id="cf_read_point" name="cf_read_point" class="required" value="<?=$config['cf_read_point']?>" size="2"> 점</td>
+    <th scope="row"><label for="cf_read_point">글읽기 포인트<strong class="sound_only">필수</strong></label></th>
+    <td><input type="text" id="cf_read_point" name="cf_read_point" class="required" required value="<?=$config['cf_read_point']?>" size="2" title="글읽기 포인트"> 점</td>
     <th scope="row"><label for="cf_write_point">글쓰기 포인트</label></th>
-    <td><input type="text" id="cf_write_point" name="cf_write_point" class="required" value="<?=$config['cf_write_point']?>" size="2"> 점</td>
+    <td><input type="text" id="cf_write_point" name="cf_write_point" class="required" required value="<?=$config['cf_write_point']?>" size="2" title="글쓰기 포인트"> 점</td>
 </tr>
 <tr>
     <th scope="row"><label for="cf_comment_point">댓글쓰기 포인트</label></th>
-    <td><input type="text" id="cf_comment_point" name="cf_comment_point" class="required" value="<?=$config['cf_comment_point']?>" size="2"> 점</td>
+    <td><input type="text" id="cf_comment_point" name="cf_comment_point" class="required" required value="<?=$config['cf_comment_point']?>" size="2" title="댓글쓰기 포인트"> 점</td>
     <th scope="row"><label for="cf_download_point">다운로드 포인트</label></th>
-    <td><input type="text" id="cf_download_point" name="cf_download_point" class="required" value="<?=$config['cf_download_point']?>" size="2"> 점</td>
+    <td><input type="text" id="cf_download_point" name="cf_download_point" class="required" required value="<?=$config['cf_download_point']?>" size="2" title="다운로드 포인트"> 점</td>
 </tr>
 <tr>
     <th scope="row"><label for="cf_link_target">새창 링크</label></th>
@@ -211,16 +211,16 @@ include_once ('./admin.head.php');
     <td><input type="text" id="cf_search_part" name="cf_search_part" value="<?=$config['cf_search_part']?>" size="2"> 건 단위로 검색</td>
 </tr>
 <tr>
-    <th scope="row"><label for="cf_search_bgcolor">검색 배경 색상</label></th>
-    <td><input type="text" id="cf_search_bgcolor" name="cf_search_bgcolor" class="required" value="<?=$config['cf_search_bgcolor']?>" size="7"></td>
-    <th scope="row"><label for="cf_search_color">검색 글자 색상</label></th>
-    <td><input type="text" id="cf_search_color" name="cf_search_color" class="required" value="<?=$config['cf_search_color']?>" size="7"></td>
+    <th scope="row"><label for="cf_search_bgcolor">검색 배경 색상<strong class="sound_only">필수</strong></label></th>
+    <td><input type="text" id="cf_search_bgcolor" name="cf_search_bgcolor" class="required" required value="<?=$config['cf_search_bgcolor']?>" size="7" title="검색 배경 색상"></td>
+    <th scope="row"><label for="cf_search_color">검색 글자 색상<strong class="sound_only">필수</strong></label></th>
+    <td><input type="text" id="cf_search_color" name="cf_search_color" class="required" required value="<?=$config['cf_search_color']?>" size="7" title="검색 글자 색상"></td>
 </tr>
 <tr>
-    <th scope="row"><label for="cf_delay_sec">글쓰기 간격</label></th>
-    <td><input type="text" id="cf_delay_sec" name="cf_delay_sec" class="required numeric" value="<?=$config['cf_delay_sec']?>" size="2"> 초 지난후 가능</td>
-    <th scope="row"><label for="cf_write_pages">페이지 표시 수</label></th>
-    <td><input type="text" id="cf_write_pages" name="cf_write_pages" class="required numeric" value="<?=$config['cf_write_pages']?>" size="2"> 페이지씩 표시</td>
+    <th scope="row"><label for="cf_delay_sec">글쓰기 간격<strong class="sound_only">필수</strong></label></th>
+    <td><input type="text" id="cf_delay_sec" name="cf_delay_sec" class="required numeric" required value="<?=$config['cf_delay_sec']?>" size="2" title="글쓰기 간격"> 초 지난후 가능</td>
+    <th scope="row"><label for="cf_write_pages">페이지 표시 수<strong class="sound_only">필수</strong></label></th>
+    <td><input type="text" id="cf_write_pages" name="cf_write_pages" class="required numeric" required value="<?=$config['cf_write_pages']?>" size="2" title="페이지 표시 수"> 페이지씩 표시</td>
 </tr>
 <tr>
     <th scope="row"><label for="cf_image_extension">이미지 업로드 확장자</label></th>
@@ -260,9 +260,9 @@ include_once ('./admin.head.php');
 </caption>
 <tbody>
 <tr>
-    <th scope="row"><label for="cf_member_skin">회원 스킨</label></th>
+    <th scope="row"><label for="cf_member_skin">회원 스킨<strong class="sound_only">필수</strong></label></th>
     <td colspan="3">
-        <select id="cf_member_skin" name="cf_member_skin" class="required">
+        <select id="cf_member_skin" name="cf_member_skin" class="required" required title="회원 스킨">
         <?
         $arr = get_skin_dir('member');
         for ($i=0; $i<count($arr); $i++) {
@@ -399,10 +399,10 @@ include_once ('./admin.head.php');
     </td>
 </tr>
 <tr>
-    <th scope="row"><label for="cf_email_admin">관리자 메일주소</label></th>
+    <th scope="row"><label for="cf_email_admin">관리자 메일주소<strong class="sound_only">필수</strong></label></th>
     <td>
         <?=help('일괄 발송 또는 테스트 등에 사용하는 이메일 주소입니다.')?>
-        <input type="text" id="cf_email_admin" name="cf_email_admin" class="email" value="<?=$config['cf_email_admin']?>" required size="40" title="관리자 메일주소">
+        <input type="text" id="cf_email_admin" name="cf_email_admin" class="email required" value="<?=$config['cf_email_admin']?>" required size="40" title="관리자 메일주소">
     </td>
 </tr>
 </table>
@@ -504,8 +504,8 @@ include_once ('./admin.head.php');
 <fieldset id="admin_confirm">
     <legend>XSS 혹은 CSRF 방지</legend>
     <p>관리자 권한을 탈취당하는 경우를 대비하여 패스워드를 다시 한번 확인합니다.</p>
-    <label for="admin_password">관리자 패스워드</label>
-    <input type="password" id="admin_password" name="admin_password" class="required">
+    <label for="admin_password">관리자 패스워드<strong class="sound_only">필수</strong></label>
+    <input type="password" id="admin_password" name="admin_password" class="required" title="관리자 패스워드">
 </fieldset>
 
 <div class="btn_confirm">
diff --git a/adm/mail_form.php b/adm/mail_form.php
index 9a34a2eb0..8a0774339 100644
--- a/adm/mail_form.php
+++ b/adm/mail_form.php
@@ -32,15 +32,15 @@ include_once('./admin.head.php');
 <caption>메일내용 입력</caption>
 <tbody>
 <tr>
-    <th scope="row"><label for="ma_subject">메일 제목</label></th>
-    <td><input type="text" id="ma_subject" name="ma_subject" value="<?=$ma['ma_subject']?>" size="100" class="required"></td>
+    <th scope="row"><label for="ma_subject">메일 제목<strong class="sound_only">필수</strong></label></th>
+    <td><input type="text" id="ma_subject" name="ma_subject" value="<?=$ma['ma_subject']?>" size="100" class="required" required title="메일제목"></td>
 </tr>
 <tr>
-    <th scope="row"><label for="ma_content">메일 내용</label></th>
+    <th scope="row"><label for="ma_content">메일 내용<strong class="sound_only">필수</strong></label></th>
     <td>
         <?=help('{이름} , {별명} , {회원아이디} , {이메일} , {생일} 처럼 HTML 코드에 삽입하면 해당 내용에 맞게 변환하여 메일 발송합니다.')?>
         <?=textarea_size('ma_content')?>
-        <textarea id="ma_content" name="ma_content" rows="20" class="required"><?=$ma['ma_content']?></textarea>
+        <textarea id="ma_content" name="ma_content" rows="20" class="required" required title="메일내용"><?=$ma['ma_content']?></textarea>
     </td>
 </tr>
 </tbody>
diff --git a/adm/member_list.php b/adm/member_list.php
index 5960e34a6..7b456f68f 100644
--- a/adm/member_list.php
+++ b/adm/member_list.php
@@ -113,8 +113,7 @@ var list_delete_php = 'member_list_delete.php';
         <option value="mb_ip">IP</option>
         <option value="mb_recommend">추천인</option>
     </select>
-    <label for="stx">검색어</label>
-    <input type="text" id="stx" name="stx" required value="<?=$stx?>">
+    <input type="text" id="stx" name="stx" required value="<?=$stx?>" title="검색어(필수)">
     <input type="submit" class="fieldset_submit" value="검색">
 </fieldset>
 </form>
diff --git a/adm/point_list.php b/adm/point_list.php
index 5981f8f0f..0c6fcb63d 100644
--- a/adm/point_list.php
+++ b/adm/point_list.php
@@ -98,7 +98,7 @@ function point_clear()
         <option value="mb_id">회원아이디</option>
         <option value="po_content">내용</option>
     </select>
-    <input type="text" id="stx" name="stx" required value="<?=$stx?>" title="검색어">
+    <input type="text" id="stx" name="stx" required value="<?=$stx?>" title="검색어(필수)">
     <input type="submit" class="fieldset_submit" value="검색">
 </fieldset>
 </form>
@@ -202,13 +202,13 @@ else
 
 <fieldset>
     <legend>개별회원 포인트 증감 설정</legend>
-    <label for="mb_id">회원아이디</label>
+    <label for="mb_id">회원아이디<strong class="sound_only">필수</strong></label>
     <input type="text" id="mb_id" name="mb_id" required value="<?=$mb_id?>">
-    <label for="po_content">포인트 내용</label>
+    <label for="po_content">포인트 내용<strong class="sound_only">필수</strong></label>
     <input type="text" id="po_content" name="po_content" required>
-    <label for="po_point">포인트</label>
+    <label for="po_point">포인트<strong class="sound_only">필수</strong></label>
     <input type="text" id="po_point" name="po_point" required>
-    <label for="admin_password">관리자패스워드</label>
+    <label for="admin_password">관리자패스워드<strong class="sound_only">필수</strong></label>
     <input type="password" id="admin_password" name="admin_password" required>
     <input type="submit" class="fieldset_submit" value="확인">
 </fieldset>
diff --git a/adm/poll_form.php b/adm/poll_form.php
index 4a10bc968..f87bc759c 100644
--- a/adm/poll_form.php
+++ b/adm/poll_form.php
@@ -33,7 +33,7 @@ include_once('./admin.head.php');
 <caption>투표내용 입력</caption>
 <tbody>
 <tr>
-    <th scope="row"><label for="po_subject">투표 제목</label></th>
+    <th scope="row"><label for="po_subject">투표 제목<strong class="sound_only">필수</strong></label></th>
     <td><input type="text" id="po_subject" name="po_subject" class="required" value="<?=$po['po_subject']?>" size="80" maxlength="125"></td>
 </tr>
 
@@ -42,13 +42,14 @@ for ($i=1; $i<=9; $i++) {
     $required = '';
     if ($i==1 || $i==2) {
         $required = 'class="required"';
+        $sound_only = '<strong class="sound_only">필수</strong>';
     }
 
     $po_poll = get_text($po['po_poll'.$i]);
 ?>
 
 <tr>
-    <th scope="row"><label for="po_poll<?=$i?>">항목 <?=$i?></label></th>
+    <th scope="row"><label for="po_poll<?=$i?>">항목 <?=$i?><?=$sound_only?></label></th>
     <td>
         <input type="text" id="po_poll<?=$i?>" name="po_poll<?=$i?>" <?=$required?> value="<?=$po_poll?>" maxlength="125">
         <label for="po_cnt<?=$i?>">항목 <?=$i?> 투표수</label>
diff --git a/adm/poll_list.php b/adm/poll_list.php
index 098002bdd..e3199d3b4 100644
--- a/adm/poll_list.php
+++ b/adm/poll_list.php
@@ -65,7 +65,7 @@ $colspan = 6;
     <select id="sfl" name="sfl">
         <option value='po_subject'>제목</option>
     </select>
-    <input type="text" name="stx" required value="<?=$stx?>" title="검색어">
+    <input type="text" name="stx" required value="<?=$stx?>" title="검색어(필수)">
     <input type="submit" class="fieldset_submit" value="검색">
 </fieldset>
 </form>
diff --git a/adm/popular_list.php b/adm/popular_list.php
index 740d2b592..3b0641ae7 100644
--- a/adm/popular_list.php
+++ b/adm/popular_list.php
@@ -84,7 +84,7 @@ var list_delete_php = 'popular_list.php';
         <option value="pp_word">검색어</option>
         <option value="pp_date">등록일</option>
     </select>
-    <input type="text" name="stx" required value="<?=$stx?>" title="검색어">
+    <input type="text" name="stx" required value="<?=$stx?>" title="검색어(필수)">
     <input type="submit" class="fieldset_submit" value="검색">
 </fieldset>
 </form>
diff --git a/adm/sendmail_test.php b/adm/sendmail_test.php
index 2ff248494..80d8f0e3c 100644
--- a/adm/sendmail_test.php
+++ b/adm/sendmail_test.php
@@ -44,8 +44,8 @@ if (isset($_POST['mail'])) {
 </p>
 <fieldset>
     <legend>테스트메일 발송</legend>
-    <label for="mail">받는 메일주소</label>
-    <input type="text" id="mail" name="mail" required value="<?=$member['mb_email']?>" size="80">
+    <label for="mail">받는 메일주소<strong class="sound_only">필수</strong></label>
+    <input type="text" id="mail" name="mail" required value="<?=$member['mb_email']?>" size="80" title="받는메일주소">
     <input type="submit" class="fieldset_submit" value="발송">
 </fieldset>
 </form>