Boncing sem flash 8 :)

function boncing(velBoncing,boncingFinal,boncingTrans1,boncingTrans2){
/* velBoncing = velocidade
   boncingFinal = Valor final do _xscale e _yscale
   boningTrans1 = Valor do _xscale e _yscale para o primeiro 'boing' 
   boningTrans2 = Valor do _xscale e _yscale para o segundo 'boing'
*/
 ball_mc.onEnterFrame = function(){
  boncingTotal = this._xscale = this._yscale += velBoncing
  if(boncingTotal >= boncingFinal){
   this.onEnterFrame = function(){
    boncingTotal = this._xscale = this._yscale -= velBoncing
    if(boncingTotal <= boncingTrans1){
     this.onEnterFrame = function(){
      boncingTotal = this._xscale = this._yscale += velBoncing
      if(boncingTotal >= boncingFinal){
       this.onEnterFrame = function(){
        boncingTotal = this._xscale = this._yscale -= velBoncing;
        if(boncingTotal <= boncingTrans2){
         this.onEnterFrame = function(){
          boncingTotal = this._xscale = this._yscale += velBoncing;
          if(boncingTotal >= boncingFinal){
           this.onEnterFrame = null
          }
         }
        }
       }
      }
     }
    }
   }
  }
 }
}
boncing (12,150,130,140)