Few questions about flash animations


I have a flash animation which i want to use as a button.
Basicaly it has a triangle and i use Tween and alpha to make it fade in

  1. how can you delay the fading thing? basically i want it to happens like 2 seconds after animation is loaded

  2. how to make it stop after first fade in so that it doesnt repeat

  3. when user drags mouse cursor on it i want the triangle to change color. How can you do that?

Thanks in advance.