chromium/third_party/blink/web_tests/css3/selectors3/xhtml/css3-modsel-d4.xml

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <title>Dynamic updating of :first-child and :last-child</title>
  <style type="text/css"><![CDATA[
   #two:first-child { background: red; }
   #three:last-child { background: lime; }
]]></style>
  <link rel="first" href="css3-modsel-1.xml" title="Groups of selectors"/>
  <link rel="prev" href="css3-modsel-d3.xml" title="Dynamic handling of attribute selectors"/>
  <link rel="up" href="./index.html"/>
  <link rel="top" href="../../index.html"/>
 </head>
 <body>

 <div>

  <script type="text/javascript">
   <![CDATA[

    function test() {
      el2 = document.getElementById('two');
      el3 = document.getElementById('three');
      el2.parentNode.insertBefore(el3.nextSibling, el2);
    }

    window.onload = test;
   ]]>
  </script>

  <div><p id="two">This line should be unstyled. (2)</p><p id="three">This line should have a green background. (3)</p><p>This line should be unstyled. (4 moving to 1)</p></div>

 </div>

</body>
</html>