How to customize the animation in Ex. 3?

[nichos]

Could anyone help me please?
I'm a newbie of Unity and NGUI. Now I trying to implement a menu system after studying the example 3 of NGUI. But I need to change the menu animation "Window - Back" and "Window - Forward" to my own style, such as just shifting the current window to the left side in 2D plane, not a complex 3D transformation. But, I have no idea how to implement such an animation or modify the animation file based on these two files provided. Could anyone give me some guide please?
Thanks in advance.

[nichos]

I forgot to mention that the format of the file is .anim.
Any help?

[ArenMook]

Sounds like you should look into how to create Unity animations. Hit Ctrl+6, this will open the animation window. Select the object you want to animate, and click the Record button. Move the timeline, move the object. Hit Play in the Animation window to see what happens.