Ignoring interface on onMouseDown

See my attachment:

The issue is that I am making something that has many buttons, and rather making a variable that has it turn true onMouseOver (when I go over an interface object, the variable wont let the click register), making clicking not register, and then register onMouseOut (when I leave the interface object, clicking is registerable) for every single button, I rather have it auto recognize if I am actually hitting the root object like shown in my attachment.

I believe it’s a simple concept, but if I am confusing you with my explanation, just look at the example, and I will clarify it if necessary. Thanks in advanced!

Arun