tion runTest() {
    document.body.offsetHeight;
    document.getElementById("multicol").style.height = "100px";
  }
  </script>

  <body onload="runTest()">
    <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
    <div id="multicol">
      <div id="block">
        <div id="target"></div>
      </div>
    </div>
  </body>
</html>
