Ticket #28224: 28224.diff

wp-content/themes/twentytwelve/header.php

@@ -40 +40 @@
                 </hgroup>
 
                 <nav id="site-navigation" class="main-navigation" role="navigation">
-                        <h3 class="menu-toggle"><?php _e( 'Menu', 'twentytwelve' ); ?></h3>
+                        <button class="menu-toggle"><?php _e( 'Menu', 'twentytwelve' ); ?></button>
                         <a class="assistive-text" href="#content" title="<?php esc_attr_e( 'Skip to content', 'twentytwelve' ); ?>"><?php _e( 'Skip to content', 'twentytwelve' ); ?></a>
                         <?php wp_nav_menu( array( 'theme_location' => 'primary', 'menu_class' => 'nav-menu' ) ); ?>
                 </nav><!-- #site-navigation -->

wp-content/themes/twentytwelve/js/navigation.js

@@ -8 +8 @@
                 return;
         }
 
-        button = nav.getElementsByTagName( 'h3' )[0];
+        button = nav.getElementsByTagName( 'button' )[0];
         menu   = nav.getElementsByTagName( 'ul' )[0];
         if ( ! button ) {
                 return;