start you animation with....

gistfile1.js

//Pseudo code
var id;
animate = function(time){
  //Eval time
  if(somethingDoneWithTimeIsTrue){
    requestAnimationFrame(step)  
  }
  
}
pause = function(time){
  //some pause function
}
resume = function(time){
  //some function to resume animation
}
//Don't do this
animate( performance.now() || Date().getTime() )
pause( performance.now() || Date().getTime() )
resume( performance.now() || Date().getTime() )

//Do this 
window.requestAnimationFrame( animate )
window.requestAnimationFrame( pause )
window.requestAnimationFrame( resume )