This Script & Animation are Full Perm and Open Source. Do anything with 'em. Don't sell it to people, though, sheesh! You CAN put it in commercial things you sell.
What It Does:---------------------------------
Replaces every single animation state you can possibly have with a null animation. IE: your avatar will NOT animate without a scripted Animation Overrider.
Why It Does It:--------------------------------
To stop system animations from interfering with AO animations, causing pop-up and other unsightly movements.
How To Use The Thing:-----------------------------------
The prim goes on your HUD. Once you wear it, your system animations are gone. If they somehow get reset, click the prim on your HUD again.
Note: You should probably make a prettier HUD button or something. No, not me, YOU! I'm busy!
How To Use The Script:---------------------------------
...are you serious? Why are you still reading??
--Enjoy!