Share some classes in your Stylesheet if you can among different news pages.
You can use the same technique for overview pages.
Make sure you don't break the php code in the subtemplates.
Pulldown menu support is now built-in.
In menus, create a new menu and name it "submenu 1".
In main menu, look for the column 'submenu' and put the name of the newly created "submenu 1" to a row that you want.
That is it.
To see it in action, move your mouse to "support" in the above menu.