The Tor Browser / file revision

 <svg xmlns="http://www.w3.org/2000/svg"

      xmlns:xlink="http://www.w3.org/1999/xlink"

      onload="go()"

      class="reftest-wait">

   <!-- In this test, we temporarily remove the animation target, detach

        its <animate> node, and then reinsert the (now former) animation target.

        We verify that animation effects are removed from the former target. -->

   <script>

     var parent;

     var rect;

     function go() {

       // Seek animation before we start tweaking things, to make sure we've

       // already started sampling it.

       document.documentElement.setCurrentTime(0.5);

       var anim = document.getElementById("anim");

       rect = anim.parentNode;

       parent = rect.parentNode;

       parent.removeChild(rect);

       rect.removeChild(anim);

       setTimeout(reinsert, 50); // Allow time for a sample

     }

     function reinsert() {

       parent.appendChild(rect);

       document.documentElement.removeAttribute("class");

     }

   </script>

   <script xlink:href="smil-util.js" type="text/javascript"/>

   <rect x="15" y="15" width="200" height="200" fill="blue">

     <animate id="anim" attributeName="height"

              begin="0s" dur="2s" from="25" to="50" fill="freeze"/>

   </rect>

 </svg>