diff --git a/js/util.js b/js/util.js
index 6bba34fae66bf97414b9d5fb0a18437a94c89000..6bd5d668a9cdddc07d8bfd76f89b0d4ad78c5d04 100644
--- a/js/util.js
+++ b/js/util.js
@@ -1280,6 +1280,13 @@ var SN = { // StatusNet
             return false;
         },
 
+        /**
+         * Switch to another active input sub-form.
+         * This will hide the current form (if any), show the new one, and
+         * update the input type tab selection state.
+         *
+         * @param {String} tag
+         */
 	switchInputFormTab: function(tag) {
 	    // The one that's current isn't current anymore
 	    $('.input_form_nav_tab.current').removeClass('current');
diff --git a/lib/action.php b/lib/action.php
index 2b237118af8be006f934d2c82e6b3acfc1c2d921..0ba4b8b8ff1dbb03c594d0711f48c0ced2466ec6 100644
--- a/lib/action.php
+++ b/lib/action.php
@@ -602,7 +602,7 @@ class Action extends HTMLOutputter // lawsuit
                                'class' => 'input_form_nav_tab');
 
                 if ($tag == 'status') {
-                    $attrs['class'] = 'current';
+                    $attrs['class'] .= ' current';
                 }
 
                 $this->elementStart('li', $attrs);