<!DOCTYPE html>
<html>
<head>
<title>This test if rounded rects on subpixel positions leave cruft behind.</title>
<style>
  div {
    position: fixed;
  }

  .roundedRect {
	border-width: 0px 0px 0px 1px;
	border-style: solid;
	border-top-left-radius: 1px;
	border-color: black;
  }
</style>
</head>
<body>
<p id="container"></p>
<script>
  var container = document.getElementById("container");
  adjustment = 0.1;
  w = 5; h = 5;
  for (i = 0; i < 20; ++i) {
    adjustment += 0.1;
    for (j = 0; j < 15; ++j) {
      var e = document.createElement("div");
      e.className = "roundedRect";
      e.style.top = ((w + 1) * i + j * adjustment) + "px";
      e.style.left = ((w + 1) * j + i * adjustment) + "px";
      e.style.width = w + "px";
      e.style.height = h + "px";
      container.appendChild(e);

      var p = document.createElement("div");
      p.style.top = ((w + 1) * i + j * adjustment) + "px";
      p.style.left = ((w + 1) * j + i * adjustment) + "px";
      p.style.width = w + "px";
      p.style.height = h + "px";
      p.style.borderLeft = "solid 1px white";
      container.appendChild(p);

      w += 0.1;
      h += 0.1;
    }
  }
</script>
</body>
</html>