diff --git a/adm/admin.head.php b/adm/admin.head.php
index d673d75a2..abe05048d 100644
--- a/adm/admin.head.php
+++ b/adm/admin.head.php
@@ -99,10 +99,13 @@ function textarea_size(fld, size)
                 $href1 = '<a href="'.$menu['menu'.$key][0][2].'">';
                 $href2 = '</a>';
             }
-            echo '<li class="gnb_1depth">';
+            if (substr($sub_menu, 0, 2) == substr($menu['menu'.$key][0][0], 0, 2))
+                $current_class = " gnb_1depth_on";
+            echo "<li class=\"gnb_1depth".$current_class."\">";
             echo $href1 . $menu['menu'.$key][0][1] . $href2;
             echo print_menu1('menu'.$key, 1);
-            echo '</li>';
+            echo "</li>";
+            if ($current_class) $current_class = ""; // 클래스 반복부여 방지
         }
 
         ?>
diff --git a/adm/admin.tail.php b/adm/admin.tail.php
index 48452ee20..477234700 100644
--- a/adm/admin.tail.php
+++ b/adm/admin.tail.php
@@ -11,6 +11,7 @@ if (!defined("_GNUBOARD_")) exit;
 <!-- <p>실행시간 : <?=get_microtime() - $begin_time;?> -->
 
 <script src="<?=$g4['admin_path']?>/admin.js"></script>
+<script src="<?=$g4['admin_path']?>/gnb.js"></script>
 
 <?
 include_once($g4['path'].'/tail.sub.php');
diff --git a/adm/gnb.js b/adm/gnb.js
new file mode 100644
index 000000000..ed182ad19
--- /dev/null
+++ b/adm/gnb.js
@@ -0,0 +1,3 @@
+$(document).ready(function(){
+    
+});
\ No newline at end of file
diff --git a/css/adm.css b/css/adm.css
index c7a491166..8edbc6d40 100644
--- a/css/adm.css
+++ b/css/adm.css
@@ -34,15 +34,17 @@ header {background:#2c2f34}
 #current_location {position:absolute;top:50px;left:0;width:100%;height:35px;background:url('../img/top_bg.png') #2c2f34 repeat-x;color:#ccc;font-size:0.75em;line-height:2.95em}
 #current_location ul {margin-left:20px}
 #current_location li {float:left}
-#wrapper {margin:60px 0 0 220px;min-height:630px}
+#wrapper {margin:60px 20px 0 220px;min-height:630px}
 
 /* GNB */
 #gnb {position:absolute;top:110px;left:20px;width:180px}
-/* #gnb ul ul {display:block;visibility:hidden;height:0} */
+.gnb_1depth ul {display:block;visibility:hidden;height:0}
+.gnb_1depth_on ul {visibility:visible;height:auto}
 .gnb_1depth {margin-bottom:5px;border:1px solid #c7cfd5;background:#eef2f3}
 .gnb_1depth a {display:block;padding-left:15px;height:38px;color:#899093;font-weight:bold;text-decoration:none;line-height:2.5em}
-.gnb_2depth {border-bottom:1px solid #eef1f2;background:#fff}
-.gnb_2depth a {display:block;padding-left:15px;height:30px;color:#000;font:0.75em normal;text-decoration:none;line-height:2.8em}
+.gnb_1depth_on a {background:#515b5f;color:#fff}
+.gnb_2depth {border-bottom:1px solid #eef1f2}
+.gnb_2depth a {display:block;padding-left:15px;height:30px;background:#fff;color:#000;font:0.75em normal;text-decoration:none;line-height:2.8em}
 .gnb_2depth a:focus, .gnb_2depth a:hover {background:#f6f9fa}
 
 /* heading */