diff --git a/detail.php b/detail.php
index 876408c..8c2c844 100644
--- a/detail.php
+++ b/detail.php
@@ -13,7 +13,7 @@ if (!defined('DOKU_INC')) die();
 
 ?><!DOCTYPE html>
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php echo $conf['lang']?>"
- lang="<?php echo $conf['lang']?>" dir="<?php echo $lang['direction'] ?>">
+ lang="<?php echo $conf['lang']?>" dir="<?php echo $lang['direction'] ?>" class="no-js">
 <head>
     <meta charset="UTF-8" />
     <!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /><![endif]-->
@@ -21,6 +21,7 @@ if (!defined('DOKU_INC')) die();
         <?php echo hsc(tpl_img_getTag('IPTC.Headline',$IMG))?>
         [<?php echo strip_tags($conf['title'])?>]
     </title>
+    <script>(function(H){H.className=H.className.replace(/\bno-js\b/,'js')})(document.documentElement)</script>
     <?php tpl_metaheaders()?>
     <meta name="viewport" content="width=device-width,initial-scale=1" />
     <?php echo tpl_favicon(array('favicon', 'mobile')) ?>
diff --git a/main.php b/main.php
index 94a1311..c29e9b2 100644
--- a/main.php
+++ b/main.php
@@ -13,11 +13,12 @@ if (!defined('DOKU_INC')) die(); /* must be run from within DokuWiki */
 $showTools = !tpl_getConf('hideTools') || ( tpl_getConf('hideTools') && $_SERVER['REMOTE_USER'] );
 ?><!DOCTYPE html>
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php echo $conf['lang'] ?>"
-  lang="<?php echo $conf['lang'] ?>" dir="<?php echo $lang['direction'] ?>">
+  lang="<?php echo $conf['lang'] ?>" dir="<?php echo $lang['direction'] ?>" class="no-js">
 <head>
     <meta charset="UTF-8" />
     <!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /><![endif]-->
     <title><?php tpl_pagetitle() ?> [<?php echo strip_tags($conf['title']) ?>]</title>
+    <script>(function(H){H.className=H.className.replace(/\bno-js\b/,'js')})(document.documentElement)</script>
     <?php tpl_metaheaders() ?>
     <meta name="viewport" content="width=device-width,initial-scale=1" />
     <?php echo tpl_favicon(array('favicon', 'mobile')) ?>
diff --git a/mediamanager.php b/mediamanager.php
index d5d86c5..eb62515 100644
--- a/mediamanager.php
+++ b/mediamanager.php
@@ -11,7 +11,7 @@ if (!defined('DOKU_INC')) die();
 
 ?><!DOCTYPE html>
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php echo $conf['lang']?>"
-  lang="<?php echo $conf['lang']?>" dir="<?php echo $lang['direction'] ?>" class="popup">
+  lang="<?php echo $conf['lang']?>" dir="<?php echo $lang['direction'] ?>" class="popup no-js">
 <head>
     <meta charset="UTF-8" />
     <!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /><![endif]-->
@@ -19,6 +19,7 @@ if (!defined('DOKU_INC')) die();
         <?php echo hsc($lang['mediaselect'])?>
         [<?php echo strip_tags($conf['title'])?>]
     </title>
+    <script>(function(H){H.className=H.className.replace(/\bno-js\b/,'js')})(document.documentElement)</script>
     <?php tpl_metaheaders()?>
     <meta name="viewport" content="width=device-width,initial-scale=1" />
     <?php echo tpl_favicon(array('favicon', 'mobile')) ?>
