Is there any way to animate the main icons when entering a sub category?

What I want to do is add the animations the main icons do when you slide down the screen on a psp go, but when entering a sub-category.

Problem is almost of the planes/pages in topmenu are all doing some sort of "native:"in the "oninit:" section, and when I try to change them it ends up crashing my psp.

So basically my question is, does anyone know the "page" for the main icons on enter? Sony changed all the names to random letters instead of actual descriptions of what that plane/page does, which makes it harder to find :/