We have a library that goes into providing those expanded UI elements, called Unicorn:
http://www.esoui.com/downloads/info1...corn.html#info
But afaik that stopped after the first item (a list).
The best fit in the
wiki is propably the
LineControl.
Or maybe you can do something with the new TextureComposite controll that was added with 1.2.3?
http://www.esoui.com/forums/showthread.php?t=1865
Overall UI is not my strong area in ESO.