Interactive buttons for 3D animation & java scripts

Hello all,
I created 3D animation pdf. I need to add buttons like play, pause, reset animation, play next step,play previous step.
I dont have much knowledge in java script. this is the first time im creating some scripts with help of google...

Somehow,successfully i created for Play and Pause animation but i got struck with remaining buttons.

and i have another query also , when ever i open the 3D pdf ,it started playing automatically.

This is my settings, how to stop automatically playing animation , I tried all the option from the above setting file.
Thanks in advance.