<script src="http://spelprogrammering.nu/simple.js">
function start()
{
  translate(-180,-280);

  save();
  translate(500, 400);
  ring(0, 0, 100, 2, "black");
  rotate(35);
  circle(0, 0, 4, "black");
  circle(200, 0, 4, "black");


  translate(200, 0);
  save();
  rotate(-90);
  translate(228,0);
  restore();
  save();
  rotate(35);
  translate(400, 0);
  rotate(180);
  arrow(0,0,0,400, false, 2, "black");
  restore();



  ring(0, 0, 100, 2, "black");
  translate(-100, 0);
  rotate(90);
  rotate(180);
  restore();

  save();
  translate(500, 400);
  rotate(150);
  translate(350, 0);
  rotate(180);
  arrow(0, 0, 0, 350);

  restore();
  restore();

  text(480,440,20, "A");
  text(640,550,20, "B");

  save();
  translate(290, 550);
  text(0,0,20, "v");
  text(13,5,15, "A");
  text(15,-20,10, "in");
  restore();

  save();
  translate(720, 800);
  text(0,0,20, "v");
  text(13,5,15, "B");
  text(15,-20,10, "in");
  restore();

}
</script>