Nesting Navigation Tabs In my custom module, I'm defining a menu_item with the type MENU_NORMAL_ITEM. In the default bartik theme, this adds a new navigation tab (next to the Home tab). This is great; however, I need nested tabs as well! Something like the following:

&lt;li&gt;Home (default tab on Bartik)&lt;/li&gt;
&lt;li&gt;Menu Navigation Item added via custom module&lt;/li&gt;
    &lt;ol&gt;
        &lt;li&gt;Nested Friend&lt;/li&gt;
    &lt;/ol&gt;
&lt;/li&gt;


With a structure similar to this, my frontend guys can theme around this and make a dropdown out of it. I've tried this:

$items['custom tab'] = array...
$items['custom tab/sub-item'] = array...


But there's no luck, and it's not even rendered when I clear my caches and do na inspect element, so I know it's not hidden or anything. I think I'm attempting to define a parent/child relationship purely through PHP. Any tips?
You need to change the type for submenu.

 $items['custom tab'] = array(
    'type' =&gt; MENU_NORMAL_ITEM,,
);
 $items['custom tab/sub-item'] = array(
    'type' =&gt; MENU_DEFAULT_LOCAL_TASK,
);