XF 1.5 Navigation Bar Drop Down

So this is how my nav bar looks like:

I used basic code to make them, here's an example:
<li class="navTab PopupClosed"><a href="ts3server://***" class="navLink">Teamspeak 3</a></li>

But I wanna make another navbar tab that has a drop down with two links that you can click, you won't be able to click the navbar, only the links at the drop down.
Can someone help me please?