<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
  <title>div merging tests</title>
</head>
<body>
  <div id="id1">
    <p>1</p>
  </div>
  <div id="id2_1">
    <div id="id2_2">
      <p>2</p>
    </div>
  </div>
  <div title="div2">
    <p>3</p>
  </div>
  <div class="cl1 cl2"
       title="div2">
    <p>4</p>
  </div>
  <div title="div2"
       onclick="f()"
       id="id5">
    <p>5</p>
  </div>
  <div title="div2"
       onclick="f()"
       id="id6">
    <p>6</p>
  </div>
</body>
</html