diff --git a/adm/shop_admin/codedupcheck.php b/adm/shop_admin/codedupcheck.php
index 48a141b22..f7e7b7042 100644
--- a/adm/shop_admin/codedupcheck.php
+++ b/adm/shop_admin/codedupcheck.php
@@ -1,30 +1,24 @@
 <?
 include_once("./_common.php");
-include_once("$g4[path]/head.sub.php");
 
-if ($it_id) 
+$name = "";
+if ($it_id)
 {
-    $sql = " select it_name from $g4[yc4_item_table] where it_id = '$it_id' ";
+    $sql = " select it_name from {$g4['yc4_item_table']} where it_id = '$it_id' ";
     $row = sql_fetch($sql);
     $code = $it_id;
-    $name = $row[it_name];
-} 
-else if ($ca_id) 
-{ 
-    $sql = " select ca_name from $g4[yc4_category_table] where ca_id = '$ca_id' ";
+    $name = $row['it_name'];
+}
+else if ($ca_id)
+{
+    $sql = " select ca_name from {$g4['yc4_category_table']} where ca_id = '$ca_id' ";
     $row = sql_fetch($sql);
     $code = $ca_id;
-    $name = $row[ca_name];
+    $name = $row['ca_name'];
 }
+
+echo $name;
+
+// json 포맷으로 데이터 전달
+//echo '{ "name": "' . $name . '", "code": "' . $code . '" }';
 ?>
-<SCRIPT LANGUAGE="JavaScript">
-<!--
-	<? if ($name) { ?>
-	    alert("코드 '<?=$code?>' 는 '<?=$name?>' (으)로 이미 등록되어 있으므로\n\n사용하실 수 없습니다.");
-	<? } else { ?>
-        alert("'<?=$code?>' 은(는) 등록된 코드가 없으므로 사용하실 수 있습니다.");
-        parent.document.<?=$frmname?>.codedup.value = '';
-	<? } ?>
-	window.close();
-//-->
-</SCRIPT>
\ No newline at end of file
diff --git a/adm/shop_admin/contentform.php b/adm/shop_admin/contentform.php
index 40a57026e..94136ceac 100644
--- a/adm/shop_admin/contentform.php
+++ b/adm/shop_admin/contentform.php
@@ -1,7 +1,7 @@
 <?
 $sub_menu = "400700";
+define('G4_EDITOR', 1);
 include_once("./_common.php");
-include_once ("$g4[path]/lib/cheditor4.lib.php");
 
 auth_check($auth[$sub_menu], "w");
 
@@ -12,17 +12,17 @@ sql_query($sql, false);
 
 $html_title = "내용";
 
-if ($w == "u") 
+if ($w == "u")
 {
     $html_title .= " 수정";
     $readonly = " readonly";
 
     $sql = " select * from $g4[yc4_content_table] where co_id = '$co_id' ";
     $co = sql_fetch($sql);
-    if (!$co[co_id])  
+    if (!$co[co_id])
         alert("등록된 자료가 없습니다.");
-} 
-else 
+}
+else
 {
     $html_title .= " 입력";
     $co[co_html] = 2;
@@ -34,9 +34,6 @@ include_once ("$g4[admin_path]/admin.head.php");
 
 <?=subtitle($html_title)?><p>
 
-<script src="<?=$g4[cheditor4_path]?>/cheditor.js"></script>
-<?=cheditor1('co_content', '100%', '350');?>
-
 <table cellpadding=0 cellspacing=0 width=100%>
 <form name=frmcontentform method=post action="./contentformupdate.php" enctype="MULTIPART/FORM-DATA" onsubmit="return frmcontentform_check(this);">
 <input type=hidden name=w value='<? echo $w?>'>
@@ -59,7 +56,7 @@ include_once ("$g4[admin_path]/admin.head.php");
 <input type=hidden name=co_html value=1>
 <tr>
     <td>내용</td>
-    <td style='padding-top:5px; padding-bottom:5px;'><?=cheditor2('co_content', $co[co_content]);?></td>
+    <td style='padding-top:5px; padding-bottom:5px;'><?=editor_html('co_content', $co[co_content]);?></td>
 </tr>
 <tr class=ht>
     <td>상단 파일 경로</td>
@@ -110,12 +107,12 @@ include_once ("$g4[admin_path]/admin.head.php");
 
 
 <script language="javascript">
-function frmcontentform_check(f) 
+function frmcontentform_check(f)
 {
     errmsg = "";
     errfld = "";
 
-    <?=cheditor3('co_content');?>
+    <?=get_editor_js('co_content');?>
 
     check_field(f.co_id, "ID를 입력하세요.");
     check_field(f.co_subject, "제목을 입력하세요.");
diff --git a/adm/shop_admin/faqform.php b/adm/shop_admin/faqform.php
index 58b36241e..f6d8f179c 100644
--- a/adm/shop_admin/faqform.php
+++ b/adm/shop_admin/faqform.php
@@ -1,7 +1,7 @@
 <?
 $sub_menu = "400710";
+define('G4_EDITOR', 1);
 include_once("./_common.php");
-include_once ("$g4[path]/lib/cheditor4.lib.php");
 
 auth_check($auth[$sub_menu], "w");
 
@@ -10,7 +10,7 @@ $html_title = "FAQ 상세";
 $sql = " select * from $g4[yc4_faq_master_table] where fm_id = '$fm_id' ";
 $fm = sql_fetch($sql);
 
-if ($w == "u") 
+if ($w == "u")
 {
     $html_title .= " 수정";
     $readonly = " readonly";
@@ -21,7 +21,7 @@ if ($w == "u")
 
     $fa[fa_subject] = htmlspecialchars2($fa[fa_subject]);
     $fa[fa_content] = htmlspecialchars2($fa[fa_content]);
-} 
+}
 else
     $html_title .= " 입력";
 
@@ -33,10 +33,6 @@ include_once ("$g4[admin_path]/admin.head.php");
 
 <?=subtitle($html_title)?><p>
 
-<script src="<?=$g4[cheditor4_path]?>/cheditor.js"></script>
-<?=cheditor1('fa_subject', '100%', '150');?>
-<?=cheditor1('fa_content', '100%', '300');?>
-
 <form name=frmfaqform method=post action='./faqformupdate.php' onsubmit="return frmfaqform_check(this);" style="margin:0px;">
 <input type=hidden name=w     value='<? echo $w ?>'>
 <input type=hidden name=fm_id value='<? echo $fm_id ?>'>
@@ -53,20 +49,20 @@ include_once ("$g4[admin_path]/admin.head.php");
     </td>
 </tr>
 <tr>
-    <td> 질문        
+    <td> 질문
 		<? if ($w == 'u') {
             echo icon("보기", "$g4[shop_path]/faq.php?fm_id=$fm_id");
             }
         ?>
     </td>
     <td style='padding-top:5px; padding-bottom:5px;'>
-        <?=cheditor2('fa_subject', $fa[fa_subject]);?>
+        <?=editor_html('fa_subject', $fa[fa_subject]);?>
     </td>
 </tr>
 <tr>
     <td> 답변</td>
     <td style='padding-top:5px; padding-bottom:5px;'>
-        <?=cheditor2('fa_content', $fa[fa_content]);?>
+        <?=editor_html('fa_content', $fa[fa_content]);?>
     </td>
 </tr>
 <tr><td colspan=2 height=1 bgcolor=CCCCCC><td></tr>
@@ -78,7 +74,7 @@ include_once ("$g4[admin_path]/admin.head.php");
 </form>
 
 <script language="javascript">
-function frmfaqform_check(f) 
+function frmfaqform_check(f)
 {
     errmsg = "";
     errfld = "";
@@ -86,15 +82,15 @@ function frmfaqform_check(f)
     //check_field(f.fa_subject, "제목을 입력하세요.");
     //check_field(f.fa_content, "내용을 입력하세요.");
 
-    if (errmsg != "") 
+    if (errmsg != "")
     {
         alert(errmsg);
         errfld.focus();
         return false;
     }
 
-    <?=cheditor3('fa_subject');?>
-    <?=cheditor3('fa_content');?>
+    <?=get_editor_js('fa_subject');?>
+    <?=get_editor_js('fa_content');?>
 
     return true;
 }
diff --git a/adm/shop_admin/faqmasterform.php b/adm/shop_admin/faqmasterform.php
index a75f722ee..72472d32c 100644
--- a/adm/shop_admin/faqmasterform.php
+++ b/adm/shop_admin/faqmasterform.php
@@ -1,12 +1,12 @@
 <?
 $sub_menu = "400710";
+define('G4_EDITOR', 1);
 include_once("./_common.php");
-include_once ("$g4[path]/lib/cheditor4.lib.php");
 
 auth_check($auth[$sub_menu], "w");
 
 $html_title = "FAQ";
-if ($w == "u") 
+if ($w == "u")
 {
     $html_title .= " 수정";
     $readonly = " readonly";
@@ -14,8 +14,8 @@ if ($w == "u")
     $sql = " select * from $g4[yc4_faq_master_table] where fm_id = '$fm_id' ";
     $fm = sql_fetch($sql);
     if (!$fm[fm_id]) alert("등록된 자료가 없습니다.");
-} 
-else 
+}
+else
 {
     $html_title .= " 입력";
 }
@@ -26,10 +26,6 @@ include_once ("$g4[admin_path]/admin.head.php");
 
 <?=subtitle($html_title)?>
 
-<script src="<?=$g4[cheditor4_path]?>/cheditor.js"></script>
-<?=cheditor1('fm_head_html', '100%', '150');?>
-<?=cheditor1('fm_tail_html', '100%', '150');?>
-
 <form name=frmfaqmasterform method=post action="./faqmasterformupdate.php" onsubmit="return frmfaqmasterform_check(this);"enctype="MULTIPART/FORM-DATA" style="margin:0px;">
 <input type=hidden name=w     value='<? echo $w ?>'>
 <input type=hidden name=fm_id value='<? echo $fm_id ?>'>
@@ -41,12 +37,12 @@ include_once ("$g4[admin_path]/admin.head.php");
     <td>제목</td>
     <td>
         <input type=text class=ed name=fm_subject size=60 value='<?=get_text($fm[fm_subject]) ?>' required itemname="제목">
-        <? 
-        if ($w == 'u') 
-        { 
-            echo icon("보기", "$g4[shop_path]/faq.php?fm_id=$fm_id"); 
+        <?
+        if ($w == 'u')
+        {
+            echo icon("보기", "$g4[shop_path]/faq.php?fm_id=$fm_id");
             echo " <a href='./faqlist.php?fm_id=$fm_id'>상세보기</a>";
-        } 
+        }
         ?>
     </td>
 </tr>
@@ -82,11 +78,11 @@ include_once ("$g4[admin_path]/admin.head.php");
 
 <tr>
     <td>상단 내용</td>
-    <td style='padding-top:5px; padding-bottom:5px;'><?=cheditor2('fm_head_html', $fm[fm_head_html]);?></td>
+    <td style='padding-top:5px; padding-bottom:5px;'><?=editor_html('fm_head_html', $fm[fm_head_html]);?></td>
 </tr>
 <tr>
     <td>하단 내용</td>
-    <td style='padding-top:5px; padding-bottom:5px;'><?=cheditor2('fm_tail_html', $fm[fm_tail_html]);?></td>
+    <td style='padding-top:5px; padding-bottom:5px;'><?=editor_html('fm_tail_html', $fm[fm_tail_html]);?></td>
 </tr>
 <tr><td colspan=2 height=1 bgcolor=CCCCCC></td></tr>
 </table>
@@ -97,10 +93,10 @@ include_once ("$g4[admin_path]/admin.head.php");
 </form>
 
 <script language="javascript">
-function frmfaqmasterform_check(f) 
+function frmfaqmasterform_check(f)
 {
-    <?=cheditor3('fm_head_html');?>
-    <?=cheditor3('fm_tail_html');?>
+    <?=get_editor_js('fm_head_html');?>
+    <?=get_editor_js('fm_tail_html');?>
 }
 
 document.frmfaqmasterform.fm_subject.focus();
diff --git a/adm/shop_admin/itemeventform.php b/adm/shop_admin/itemeventform.php
index f332cbb19..dbdffa7ed 100644
--- a/adm/shop_admin/itemeventform.php
+++ b/adm/shop_admin/itemeventform.php
@@ -1,13 +1,13 @@
 <?
 $sub_menu = "400630";
+define('G4_EDITOR', 1);
 include_once("./_common.php");
-include_once ("$g4[path]/lib/cheditor4.lib.php");
 
 auth_check($auth[$sub_menu], "w");
 
 $html_title = "이벤트 ";
 
-if ($w == "u") 
+if ($w == "u")
 {
     $html_title .= " 수정";
     $readonly = " readonly";
@@ -16,8 +16,8 @@ if ($w == "u")
     $ev = sql_fetch($sql);
     if (!$ev[ev_id])
         alert("등록된 자료가 없습니다.");
-} 
-else 
+}
+else
 {
     $html_title .= " 입력";
     $ev[ev_skin] = 0;
@@ -37,10 +37,6 @@ include_once ("$g4[admin_path]/admin.head.php");
 
 <?=subtitle($html_title);?><p>
 
-<script src="<?=$g4[cheditor4_path]?>/cheditor.js"></script>
-<?=cheditor1('ev_head_html', '100%', '150');?>
-<?=cheditor1('ev_tail_html', '100%', '150');?>
-
 <form name=feventform method=post action="./itemeventformupdate.php" enctype="MULTIPART/FORM-DATA" style="margin:0px;" onsubmit="return feventform_check(this);">
 <input type=hidden name=w     value='<? echo $w ?>'>
 <input type=hidden name=ev_id value='<? echo $ev_id ?>'>
@@ -54,10 +50,10 @@ include_once ("$g4[admin_path]/admin.head.php");
 <tr class=ht>
     <td>이벤트번호</td>
     <td>
-        <? 
+        <?
         echo $ev_id;
         echo "&nbsp;&nbsp;&nbsp;";
-        echo icon("보기", "$g4[shop_path]/event.php?ev_id=$ev[ev_id]"); 
+        echo icon("보기", "$g4[shop_path]/event.php?ev_id=$ev[ev_id]");
         ?>
 </tr>
 <? } ?>
@@ -100,7 +96,7 @@ include_once ("$g4[admin_path]/admin.head.php");
     <td>사용</td>
     <td>
         <select name=ev_use>
-        <option value='1'>예        
+        <option value='1'>예
         <option value='0'>아니오
         </select>
         <script>document.all.ev_use.value='<?=$ev[ev_use]?>';</script>
@@ -164,11 +160,11 @@ include_once ("$g4[admin_path]/admin.head.php");
 
 <tr>
     <td>상단 내용</td>
-    <td colspan=3 align=right style='padding-top:5px; padding-bottom:5px;'><?=cheditor2('ev_head_html', $ev[ev_head_html]);?></td>
+    <td colspan=3 align=right style='padding-top:5px; padding-bottom:5px;'><?=editor_html('ev_head_html', $ev[ev_head_html]);?></td>
 </tr>
 <tr>
     <td>하단 내용</td>
-    <td colspan=3 align=right style='padding-top:5px; padding-bottom:5px;'><?=cheditor2('ev_tail_html', $ev[ev_tail_html]);?></td>
+    <td colspan=3 align=right style='padding-top:5px; padding-bottom:5px;'><?=editor_html('ev_tail_html', $ev[ev_tail_html]);?></td>
 </tr>
 <tr><td colspan=4 height=1 bgcolor=#CCCCCC></td></tr>
 </table>
@@ -180,10 +176,10 @@ include_once ("$g4[admin_path]/admin.head.php");
 
 
 <script language="javascript">
-function feventform_check(f) 
+function feventform_check(f)
 {
-    <?=cheditor3('ev_head_html');?>
-    <?=cheditor3('ev_tail_html');?>
+    <?=get_editor_js('ev_head_html');?>
+    <?=get_editor_js('ev_tail_html');?>
 
     return true;
 }
diff --git a/adm/shop_admin/itemform.php b/adm/shop_admin/itemform.php
index bd5a1dfc8..a5aa794b1 100644
--- a/adm/shop_admin/itemform.php
+++ b/adm/shop_admin/itemform.php
@@ -1,7 +1,7 @@
 <?
 $sub_menu = "400300";
+define('G4_EDITOR', 1);
 include_once("./_common.php");
-include_once ($g4['path'].'/lib/cheditor4.lib.php');
 
 auth_check($auth[$sub_menu], "w");
 
@@ -76,11 +76,6 @@ $g4[title] = $html_title;
 include_once ("$g4[admin_path]/admin.head.php");
 ?>
 
-<script src="<?=$g4[cheditor4_path]?>/cheditor.js"></script>
-<?=cheditor1('it_explan', '100%', '350');?>
-<?=cheditor1('it_head_html', '100%', '150');?>
-<?=cheditor1('it_tail_html', '100%', '150');?>
-
 <style type="text/css">
 <!--
 ul { margin: 0; padding: 0; list-style: none; }
@@ -312,7 +307,7 @@ ul { margin: 0; padding: 0; list-style: none; }
 <input type=hidden name=it_explan_html value=1>
 <tr>
     <td>상품설명</td>
-    <td colspan=3 style='padding-top:7px; padding-bottom:7px;'><?=cheditor2('it_explan', $it[it_explan]);?></td>
+    <td colspan=3 style='padding-top:7px; padding-bottom:7px;'><?=editor_html('it_explan', $it[it_explan]);?></td>
 </tr>
 <? if($default['de_send_cost_case'] == "개별배송") { ?>
 <tr class="ht">
@@ -792,11 +787,11 @@ ul { margin: 0; padding: 0; list-style: none; }
 
 <tr>
     <td>상품상단내용 <?=help("상품상세설명 페이지 상단에 출력하는 HTML 내용입니다.", -150);?></td>
-    <td colspan=3 align=right style='padding-top:7px; padding-bottom:7px;'><?=cheditor2('it_head_html', $it[it_head_html]);?></td>
+    <td colspan=3 align=right style='padding-top:7px; padding-bottom:7px;'><?=editor_html('it_head_html', $it[it_head_html]);?></td>
 </tr>
 <tr>
     <td>상품하단내용 <?=help("상품상세설명 페이지 상단에 출력하는 HTML 내용입니다.", -150);?></td>
-    <td colspan=3 align=right style='padding-top:7px; padding-bottom:7px;'><?=cheditor2('it_tail_html', $it[it_tail_html]);?></td>
+    <td colspan=3 align=right style='padding-top:7px; padding-bottom:7px;'><?=editor_html('it_tail_html', $it[it_tail_html]);?></td>
 </tr>
 
 <? if ($w == "u") { ?>
@@ -853,7 +848,21 @@ function codedupcheck(id)
         f.it_id.focus();
         return;
     }
-    window.open("./codedupcheck.php?it_id="+id+"&frmname=fitemform", "hiddenframe");
+
+    $.post(
+        "./codedupcheck.php",
+        { id: id },
+        function(data)
+        {
+            if(data) {
+                alert("코드 "+id+" 는 '"+data+"' (으)로 이미 등록되어 있으므로\n\n사용하실 수 없습니다.");
+                return false;
+            } else {
+                alert("'"+id+"' 은(는) 등록된 코드가 없으므로 사용하실 수 있습니다.");
+                f.codedup.value = "";
+            }
+        }
+    );
 }
 
 // 선택옵션창
@@ -918,9 +927,9 @@ function fitemformcheck(f)
         }
     }
 
-    <?=cheditor3('it_explan')."\n";?>
-    <?=cheditor3('it_head_html')."\n";?>
-    <?=cheditor3('it_tail_html')."\n";?>
+    <?=get_editor_js('it_explan');?>
+    <?=get_editor_js('it_head_html');?>
+    <?=get_editor_js('it_tail_html');?>
     return true;
 }
 
diff --git a/adm/shop_admin/itempsform.php b/adm/shop_admin/itempsform.php
index fb5e66526..0ee38ef24 100644
--- a/adm/shop_admin/itempsform.php
+++ b/adm/shop_admin/itempsform.php
@@ -1,17 +1,17 @@
 <?
 $sub_menu = "400650";
+define('G4_EDITOR', 1);
 include_once("./_common.php");
-include_once ("$g4[path]/lib/cheditor4.lib.php");
 
 auth_check($auth[$sub_menu], "w");
 
-$sql = " select * 
+$sql = " select *
            from $g4[yc4_item_ps_table] a
-           left join $g4[member_table] b on (a.mb_id = b.mb_id) 
+           left join $g4[member_table] b on (a.mb_id = b.mb_id)
            left join $g4[yc4_item_table] c on (a.it_id = c.it_id)
           where is_id = '$is_id' ";
 $is = sql_fetch($sql);
-if (!$is[is_id]) 
+if (!$is[is_id])
     alert("등록된 자료가 없습니다.");
 
 $name = get_sideview($is[mb_id], get_text($is[is_name]), $is[mb_email], $is[mb_homepage]);
@@ -21,8 +21,6 @@ include_once ("$g4[admin_path]/admin.head.php");
 
 $qstr = "page=$page&sort1=$sort1&sort2=$sort2";
 ?>
-<script src="<?=$g4[cheditor4_path]?>/cheditor.js"></script>
-<?=cheditor1('is_content', '100%', '350');?>
 
 <?=subtitle($g4[title])?>
 
@@ -58,7 +56,7 @@ $qstr = "page=$page&sort1=$sort1&sort2=$sort2";
     <td>
         <!-- <?=textarea_size("is_content")?>
         <textarea id='is_content' name="is_content" rows="10" style='width:99%;' class=ed required itemname='내용'><? echo get_text($is[is_content]) ?></textarea> -->
-        <?=cheditor2('is_content', $is['is_content']);?>
+        <?=editor_html('is_content', $is['is_content']);?>
     </td>
 </tr>
 <tr height=25>
@@ -76,7 +74,7 @@ $qstr = "page=$page&sort1=$sort1&sort2=$sort2";
 <script>
 function fitemps_submit(f)
 {
-    <? echo cheditor3('is_content'); ?>
+    <? echo get_editor_js('is_content'); ?>
 
     f.action="./itempsformupdate.php";
     return true;
diff --git a/adm/shop_admin/newwinform.php b/adm/shop_admin/newwinform.php
index 9aff91a9e..950f58a13 100644
--- a/adm/shop_admin/newwinform.php
+++ b/adm/shop_admin/newwinform.php
@@ -1,19 +1,19 @@
 <?
 $sub_menu = "400720";
+define('G4_EDITOR', 1);
 include_once("./_common.php");
-include_once ("$g4[path]/lib/cheditor4.lib.php");
 
 auth_check($auth[$sub_menu], "w");
 
 $html_title = "새창";
-if ($w == "u") 
+if ($w == "u")
 {
     $html_title .= " 수정";
     $sql = " select * from $g4[yc4_new_win_table] where nw_id = '$nw_id' ";
     $nw = sql_fetch($sql);
     if (!$nw[nw_id]) alert("등록된 자료가 없습니다.");
-} 
-else 
+}
+else
 {
     $html_title .= " 입력";
     $nw[nw_disable_hours] = 24;
@@ -30,9 +30,6 @@ include_once ("$g4[admin_path]/admin.head.php");
 
 <?=subtitle($html_title)?>
 
-<script src="<?=$g4[cheditor4_path]?>/cheditor.js"></script>
-<?=cheditor1('nw_content', '100%', '350');?>
-
 <form name=frmnewwin method=post action="./newwinformupdate.php" onsubmit="return frmnewwin_check(this);" style="margin:0px;">
 <input type=hidden name=w     value='<? echo $w ?>'>
 <input type=hidden name=nw_id value='<? echo $nw_id ?>'>
@@ -75,7 +72,7 @@ include_once ("$g4[admin_path]/admin.head.php");
 <input type=hidden name=nw_content_html value=1>
 <tr>
     <td>내용</td>
-    <td colspan=3 style='padding-top:5px; padding-bottom:5px;'><?=cheditor2('nw_content', $nw[nw_content]);?></td>
+    <td colspan=3 style='padding-top:5px; padding-bottom:5px;'><?=editor_html('nw_content', $nw[nw_content]);?></td>
 </tr>
 <tr><td colspan=4 height=1 bgcolor=CCCCCC></td></tr>
 </table>
@@ -86,12 +83,12 @@ include_once ("$g4[admin_path]/admin.head.php");
 </form>
 
 <script language="javascript">
-function frmnewwin_check(f) 
+function frmnewwin_check(f)
 {
     errmsg = "";
     errfld = "";
-    
-    <?=cheditor3('nw_content');?>
+
+    <?=get_editor_js('nw_content');?>
 
     check_field(f.nw_subject, "제목을 입력하세요.");
 
@@ -99,7 +96,7 @@ function frmnewwin_check(f)
         alert(errmsg);
         errfld.focus();
         return false;
-    }              
+    }
     return true;
 }
 
diff --git a/lib/thumb.lib.php b/lib/thumb.lib.php
new file mode 100644
index 000000000..5d4a24f99
--- /dev/null
+++ b/lib/thumb.lib.php
@@ -0,0 +1,128 @@
+<?
+if (!defined('_GNUBOARD_')) exit;
+
+/*******************************************************************************
+    썸네일 Class
+
+    사용법 : 
+    
+    $thumb = new g4_thumbnail(경로, 썸네일이미지폭);
+    $thumb->run(이미지 경로가 포함된 컨텐츠);
+
+*******************************************************************************/
+class g4_thumb {
+    var $path;
+    var $width;
+    var $red = 0xff;
+    var $green = 0xff;
+    var $blue = 0xff;
+    var $quality = 100;
+    var $permission = 0606;
+
+    function g4_thumb($path, $width) {
+        $this->set_path($path);
+        $this->set_width($width);
+    }
+
+    // 경로
+    function set_path($path) {
+        $this->path = $path;
+        @mkdir($path, 0707);
+        @chmod($path, 0707);
+    }
+
+    function set_width($width) {
+        $this->width = $width;
+    }
+
+    function get_width() {
+        return $this->width;
+    }
+
+    function set_bgcolor($red, $green, $blue) {
+        $this->red   = $red;
+        $this->green = $green;
+        $this->blue  = $blue;
+    }
+
+    function set_quality($quality) {
+        $this->quality = $quality;
+    }
+
+    function set_permission($permission) {
+        $this->permission = $permission;
+    }
+
+    function create($srcimg, $thumbfile) {
+        $width = $this->get_width();
+        $source = null;
+        $size = @getimagesize($srcimg);
+        if ($size[2] == 1) 
+            $source = @imagecreatefromgif($srcimg);
+        else if ($size[2] == 2)
+            $source = @imagecreatefromjpeg($srcimg);
+        else if ($size[2] == 3) 
+            $source = @imagecreatefrompng($srcimg);
+
+        if ($source == null)
+            return '';
+
+        // 이미지의 폭이 설정폭 보다 작다면
+        if ($size[0] < $width) {
+            $width  = $size[0];
+            $height = $size[1];
+        } else {
+            $rate = $width / $size[0];
+            $height = (int)($size[1] * $rate);
+        }
+
+        $target = @imagecreatetruecolor($width, $height);
+        $bgcolor = @imagecolorallocate($target, $this->red, $this->green, $this->blue); // 썸네일 배경
+        imagefilledrectangle($target, 0, 0, $width, $height, $bgcolor);
+        imagecopyresampled($source, $source, 0, 0, 0, 0, $width, $height, $size[0], $size[1]);
+        imagecopy($target, $source, 0, 0, 0, 0, $size[0], $size[1]);
+        imagejpeg($target, $thumbfile, $this->quality);
+        chmod($thumbfile, $this->permission); // 추후 삭제를 위하여 파일모드 변경
+        return $thumbfile;
+    }
+
+    function thumbnail($matches)
+    {
+        foreach ($matches as $img) {
+            preg_match("/src=[\"\']?([^\"\'\s>]+)/i", $img, $m);
+            $src = trim($m[1]);
+
+            $result = true;
+            if (preg_match("/\.(jpe?g|png|gif)$/i", $src)) {
+                // 유일한 파일명을 만든다.
+                $filename = md5($src).'_'.$this->width;
+                $thumb = $this->path.'/'.$filename;
+
+                if (!file_exists($thumb)) {
+                    $result = $this->create($src, $thumb);
+                }
+            }
+            else {
+                $thumb = $src;
+            }
+
+            if ($result) {
+                $size = @getimagesize($src);
+                if ($size[0] < $this->width) {
+                    return "<img src='$thumb' width='$size[0]' />";
+                } else {
+                    return "<a href='$src' target='_blank' title='클릭하시면 이미지가 크게 보입니다.'><img src='$thumb' width='{$this->width}' border='0' /></a>";
+                }
+            }
+        }
+    }
+
+    function run($content)
+    {
+        //return preg_replace_callback('#<img[^>]+>#iS', create_function('$matches', 'return g4_thumb::thumbnail($matches);'), $content);
+        //return preg_replace_callback('#<img[^>]+>#iS', array('g4_thumb', 'thumbnail'), $content);
+        //return preg_replace_callback('#<img[^>]+>#iS', 'g4_thumb::thumbnail', $content);
+        return preg_replace_callback('#<img[^>]+>#iS', array($this, 'thumbnail'), $content);
+    }
+}
+?>
\ No newline at end of file
diff --git a/skin/board/neo/view.skin.php b/skin/board/neo/view.skin.php
index 0d37e3a68..5db94d87f 100644
--- a/skin/board/neo/view.skin.php
+++ b/skin/board/neo/view.skin.php
@@ -176,19 +176,27 @@ function board_move(href)
 
 <script>
 // 이미지 등비율 리사이징
-$(function(){
-    var img = $('#bo_v_img img');
-    var img_org_width = img.width();
-    $(window).resize(function(){
-        var img_wrap = $('#bo_v_img').width();
-        img.each(function() {
-            var img_width = $(this).width();
-            if (img_width > img_wrap) {
-                $(this).addClass('img_fix');
-            } else if (img_width <= img_wrap && img_width >= img_org_width) {
-                $(this).removeClass('img_fix');
-            }
-        });
-    }).resize();
+$(window).load(function() {
+    view_image_resize();
 });
+
+$(window).resize(function(){
+    view_image_resize();
+});
+
+function view_image_resize()
+{
+    var $img = $('#bo_v_img img');
+    var img_wrap = $('#bo_v_img').width();
+
+    $img.each(function() {
+        var img_width = $(this).width();
+        $(this).data("width", img_width); // 원래 이미지 사이즈
+        if (img_width > img_wrap) {
+            $(this).addClass('img_fix');
+        } else if (img_width <= img_wrap && img_width >= $(this).data("width")) {
+            $(this).removeClass('img_fix');
+        }
+    });
+}
 </script>
\ No newline at end of file