How do you reference buttons in code?

[Boomer]

As per the title suggests, I've Googled this issue but cannot, for the life of me, figure out how to make references to my NGUI buttons in code.

For a little more information, I'm trying to make a GUI where when you click a button it pops up another button created with NGUI.  In order to do this I need to use Show and Hide commands within C#.  This, however, is proving difficult due to my inability to set calls to the buttons within the code itself.  I might be missing something simple, I suppose (very new to Unity.) 

Any assistance, or pointing towards something where I can help myself would be greatly appreciated.

[ArenMook]

Via code?

1. UIEventListener.Get(buttonGameObject).onClick = YourCallback;

...or using the button component's on click notification (same as you see in inspector):

1. EventDelegate.Set(GetComponent<UIButton>().onClick, YourCallback);