diff --git a/config_default.php b/config_default.php
index dff7908..e8dabb7 100644
--- a/config_default.php
+++ b/config_default.php
@@ -166,4 +166,12 @@
      * 0 : No
      */
     $config['cops_provide_kepub'] = "0";
+    
+    /*
+     * Use local JS resources instead if external resources hosted on CDN
+     * 1 : Yes (enable)
+     * 0 : No
+     */
+    $config['cops_use_local_resources'] = "0";
+
 ?>
\ No newline at end of file
diff --git a/index.php b/index.php
index fd4d835..cddfaf1 100644
--- a/index.php
+++ b/index.php
@@ -54,7 +54,11 @@
     <meta http-equiv="imagetoolbar" content="no" />
     <meta name="viewport" content="width=device-width, height=device-height, user-scalable=no" />
     <title><?php echo htmlspecialchars ($currentPage->title) ?></title>
+    <?php if ($config['cops_use_local_resources'] == 0) { ?>
     <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
+    <?php } else { ?>
+    <script type="text/javascript" src="<?php echo getUrlWithVersion("js/jquery-1.9.1.min.js") ?>"></script>
+    <?php } ?>
     <script type="text/javascript" src="fancybox/jquery.fancybox.pack.js?v=2.1.4"></script>
     <script type="text/javascript" src="<?php echo getUrlWithVersion("js/jquery.sortElements.js") ?>"></script>
     <script type="text/javascript" src="<?php echo getUrlWithVersion("js/jquery.cookies.js") ?>"></script>