[CorC]

muv.onPress = function (){
   this.onEnterFrame = Drag;
}
muv.onRelease = function (){
   this.onEnterFrame = null;
}
function Drag(){
   if(this._x<100){
      trace("x < 100");
   }
   if(this._y>200){
      trace("y > 200");
   }
}

и т. д.