Change the MV's position every five seconds

1

This is my coding. _root.box._x is my MV. I want to change the MV’s position every five seconds. Is it posible??
Thanks for your help.

onClipEvent (load)
{
_root.box._x = 100;
_root.box._y = 50;

  this.position_X=10;
  this.position_Y=5;

}

onClipEvent (enterFrame )
{
_root.box._x = this.position_X+10;
_root.box._y = this.position_Y+5;
}