diff --git a/detail.php b/detail.php
index 48a8fe6..1b73057 100644
--- a/detail.php
+++ b/detail.php
@@ -30,7 +30,7 @@ header('X-UA-Compatible: IE=edge,chrome=1');
 
 <body>
     <!--[if lte IE 7 ]><div id="IE7"><![endif]--><!--[if IE 8 ]><div id="IE8"><![endif]-->
-    <div id="dokuwiki__detail" class="dokuwiki">
+    <div id="dokuwiki__detail" class="<?php echo tpl_classes(); ?>">
         <?php html_msgarea() ?>
 
         <?php if($ERROR){ print $ERROR; }else{ ?>
diff --git a/main.php b/main.php
index f02f072..30bb9a3 100644
--- a/main.php
+++ b/main.php
@@ -32,11 +32,10 @@ $showSidebar = page_findnearest($conf['sidebar']) && ($ACT=='show');
     <!--[if lte IE 7 ]><div id="IE7"><![endif]--><!--[if IE 8 ]><div id="IE8"><![endif]-->
 
     <?php /* the "dokuwiki__top" id is needed somewhere at the top, because that's where the "back to top" button/link links to */ ?>
-    <?php /* classes mode_<action> are added to make it possible to e.g. style a page differently if it's in edit mode,
-         see http://www.dokuwiki.org/devel:action_modes for a list of action modes */ ?>
-    <?php /* .dokuwiki should always be in one of the surrounding elements (e.g. plugins and templates depend on it) */ ?>
-    <div id="dokuwiki__site"><div id="dokuwiki__top"
-        class="dokuwiki site mode_<?php echo $ACT ?> <?php echo ($showSidebar) ? 'hasSidebar' : '' ?>">
+    <?php /* tpl_classes() provides useful CSS classes; if you choose not to use it, the 'dokuwiki' class at least
+             should always be in one of the surrounding elements (e.g. plugins and templates depend on it) */ ?>
+    <div id="dokuwiki__site"><div id="dokuwiki__top" class="site <?php echo tpl_classes(); ?> <?php
+        echo ($showSidebar) ? 'hasSidebar' : ''; ?>">
         <?php html_msgarea() /* occasional error and info messages on top of the page */ ?>
         <?php tpl_includeFile('header.html') ?>
 
diff --git a/mediamanager.php b/mediamanager.php
index c4e68f1..5af6205 100644
--- a/mediamanager.php
+++ b/mediamanager.php
@@ -28,7 +28,7 @@ header('X-UA-Compatible: IE=edge,chrome=1');
 
 <body>
     <!--[if lte IE 7 ]><div id="IE7"><![endif]--><!--[if IE 8 ]><div id="IE8"><![endif]-->
-    <div id="media__manager" class="dokuwiki">
+    <div id="media__manager" class="<?php echo tpl_classes(); ?>">
         <?php html_msgarea() ?>
         <div id="mediamgr__aside"><div class="pad">
             <h1><?php echo hsc($lang['mediaselect'])?></h1>
