How can I add a drop-down menu to the secondary navigation tab (displayed when a parent tab is selected)? I've tried and searched, but haven't had any luck. Trying to mimic what I get automatically when using the nodes as tabs plugin (see attachment). I'm trying to do the same but with custom links. I suspect I'm using the incorrect classes. (Popup PopupControl PopupContainerControl PopupOpen for the li class as the main secondary menu link and "secondaryContent blockLinksList" for the lower ul class. No luck. I'm not sure how I can find the right classes - already tried finding it by using "Inspect Element" in Chrome. Can anyone shed light on this?