"start", {top: 100, left: 100}, {top: 0, left: 0});
    test_alignment("center", {top: 0, left: 0}, {top: 100, left: 100});
    test_alignment("end", {top: 100, left: 100}, {top: 200, left: 200});
  }, "scrollIntoView scrolls scrollport-covering child in both axes");
</script>
