diff --git a/js/breadcrumb.js b/js/breadcrumb.js
new file mode 100644
index 0000000..4041fab
--- /dev/null
+++ b/js/breadcrumb.js
@@ -0,0 +1,18 @@
+/**
+ * Sets up the breadcrumb behaviour (adds do / ACT status information)
+ */
+jQuery(function () {
+    const $breadcrumb = jQuery('.breadcrumbs');
+    if (!$breadcrumb.length) return;
+
+    /**
+     * add ACT status to breadcrumb (if not show)
+     *
+     */
+    const mode = $breadcrumb.attr('data-do');
+    if(mode && mode.indexOf('show') !== 0){
+        var markup = '<bdi lang="en"><span class="curid"> : <strong>' + mode + '</strong></span></bdi>';
+        $breadcrumb.find('p').append(markup);
+    }
+
+});
diff --git a/main.php b/main.php
index 533efb4..2d64a12 100755
--- a/main.php
+++ b/main.php
@@ -236,7 +236,7 @@ $classWideContent = ($ACT === "show") ? "": "wide-content ";
                         <?php
                          ?>
 
-                        <div class="breadcrumbs">
+                        <div class="breadcrumbs" data-do="<?php echo $ACT?>">
 
                             <div class="togglelink page_main-content">
                                 <a href="#">&lt; &gt;<span class="sr-out"><?php echo tpl_getLang('a11y_sidebartoggle')?></span></a>
diff --git a/script.js b/script.js
index 2b8a288..0a2e1a0 100755
--- a/script.js
+++ b/script.js
@@ -5,3 +5,4 @@
 
 /* DOKUWIKI:include js/meta-box.js */
 /* DOKUWIKI:include js/sidebar.js */
+/* DOKUWIKI:include js/breadcrumb.js */