<!DOCTYPE html>

<script>
  onload = function() {
    if (window.eventSender) {
      var selectList = document.getElementById("list");
      var left = selectList.offsetLeft;
      var top = selectList.offsetTop;

      // scroll the list all the way down
      eventSender.mouseMoveTo(left + 10, top + 10);
      eventSender.continuousMouseScrollBy(0, -10000);
      eventSender.mouseMoveTo(0, 0);
    }
  }
</script>

<body style="font: 16px/16px monospace;">
    <p>Scrolling inside the list using the mouse wheel should work as expected<br/>
    <select id="list" size="2">
      <option>content1</option>
      <option>content2</option>
      <option>content3</option>
      <option>content4</option>
      <option>content5</option>
      <option>content6</option>
      <option>content7</option>
      <option>content8</option>
      <option>content9</option>
      <option>content10</option>
    </select>
</body>