diff --git a/js/common.js b/js/common.js
index 02ce71a7b..6a1bd75a1 100644
--- a/js/common.js
+++ b/js/common.js
@@ -540,7 +540,7 @@ $(function() {
 /**
  * 텍스트 리사이즈
 **/
-function font_resize(id, rmv_class, add_class)
+function font_resize(id, rmv_class, add_class, othis)
 {
     var $el = $("#"+id);
 
@@ -548,6 +548,10 @@ function font_resize(id, rmv_class, add_class)
 
     set_cookie("ck_font_resize_rmv_class", rmv_class, 1, g5_cookie_domain);
     set_cookie("ck_font_resize_add_class", add_class, 1, g5_cookie_domain);
+
+    if(typeof othis !== "undefined"){
+        $(othis).addClass('select').siblings().removeClass('select');
+    }
 }
 
 /**
diff --git a/mobile/head.php b/mobile/head.php
index d07c45b33..40c34914c 100644
--- a/mobile/head.php
+++ b/mobile/head.php
@@ -133,14 +133,24 @@ include_once(G5_LIB_PATH.'/popular.lib.php');
 
             <div id="text_size">
             <!-- font_resize('엘리먼트id', '제거할 class', '추가할 class'); -->
-                <button id="size_down" onclick="font_resize('container', 'ts_up ts_up2', '');" class="select"><img src="<?php echo G5_URL; ?>/img/ts01.png" width="20" alt="기본"></button>
-                <button id="size_def" onclick="font_resize('container', 'ts_up ts_up2', 'ts_up');"><img src="<?php echo G5_URL; ?>/img/ts02.png" width="20" alt="크게"></button>
-                <button id="size_up" onclick="font_resize('container', 'ts_up ts_up2', 'ts_up2');"><img src="<?php echo G5_URL; ?>/img/ts03.png" width="20" alt="더크게"></button>
+                <button id="size_down" onclick="font_resize('container', 'ts_up ts_up2', '', this);" class="select"><img src="<?php echo G5_URL; ?>/img/ts01.png" width="20" alt="기본"></button>
+                <button id="size_def" onclick="font_resize('container', 'ts_up ts_up2', 'ts_up', this);"><img src="<?php echo G5_URL; ?>/img/ts02.png" width="20" alt="크게"></button>
+                <button id="size_up" onclick="font_resize('container', 'ts_up ts_up2', 'ts_up2', this);"><img src="<?php echo G5_URL; ?>/img/ts03.png" width="20" alt="더크게"></button>
             </div>
         </div>
 
         <script>
         jQuery(function ($) {
+            //폰트 크기 조정 위치 지정
+            var font_resize_class = get_cookie("ck_font_resize_add_class");
+            if( font_resize_class == 'ts_up' ){
+                $("#text_size button").removeClass("select");
+                $("#size_def").addClass("select");
+            } else if (font_resize_class == 'ts_up2') {
+                $("#text_size button").removeClass("select");
+                $("#size_up").addClass("select");
+            }
+
             $(".hd_opener").on("click", function(e) {
                 var $this = $(this);
                 var $hd_layer = $this.next(".hd_div");
diff --git a/theme/basic/mobile/head.php b/theme/basic/mobile/head.php
index f460f5139..237cc0579 100644
--- a/theme/basic/mobile/head.php
+++ b/theme/basic/mobile/head.php
@@ -128,14 +128,24 @@ include_once(G5_LIB_PATH.'/popular.lib.php');
 
             <div id="text_size">
             <!-- font_resize('엘리먼트id', '제거할 class', '추가할 class'); -->
-                <button id="size_down" onclick="font_resize('container', 'ts_up ts_up2', '');" class="select"><img src="<?php echo G5_URL; ?>/img/ts01.png" width="20" alt="기본"></button>
-                <button id="size_def" onclick="font_resize('container', 'ts_up ts_up2', 'ts_up');"><img src="<?php echo G5_URL; ?>/img/ts02.png" width="20" alt="크게"></button>
-                <button id="size_up" onclick="font_resize('container', 'ts_up ts_up2', 'ts_up2');"><img src="<?php echo G5_URL; ?>/img/ts03.png" width="20" alt="더크게"></button>
+                <button id="size_down" onclick="font_resize('container', 'ts_up ts_up2', '', this);" class="select"><img src="<?php echo G5_URL; ?>/img/ts01.png" width="20" alt="기본"></button>
+                <button id="size_def" onclick="font_resize('container', 'ts_up ts_up2', 'ts_up', this);"><img src="<?php echo G5_URL; ?>/img/ts02.png" width="20" alt="크게"></button>
+                <button id="size_up" onclick="font_resize('container', 'ts_up ts_up2', 'ts_up2', this);"><img src="<?php echo G5_URL; ?>/img/ts03.png" width="20" alt="더크게"></button>
             </div>
         </div>
 
         <script>
         $(function () {
+            //폰트 크기 조정 위치 지정
+            var font_resize_class = get_cookie("ck_font_resize_add_class");
+            if( font_resize_class == 'ts_up' ){
+                $("#text_size button").removeClass("select");
+                $("#size_def").addClass("select");
+            } else if (font_resize_class == 'ts_up2') {
+                $("#text_size button").removeClass("select");
+                $("#size_up").addClass("select");
+            }
+
             $(".hd_opener").on("click", function() {
                 var $this = $(this);
                 var $hd_layer = $this.next(".hd_div");