The Tor Browser / file revision

 <svg xmlns="http://www.w3.org/2000/svg" version="1.1"

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

      onload="boom();">

 <script><![CDATA[

 // reftest for bug 467498

 function boom()

 {

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

   rect.setAttribute("height", "100%");

 }

 ]]></script>

   <g style="fill: blue;">

     <g id="g1">

       <rect id="rect" x="20%" width="4%" height="20%"/>

     </g>

   </g>

   <g style="fill: green;">

     <g id="g2">

       <use x="20%" xlink:href="#g1"/>

     </g>

   </g>

   <g style="fill: red;">

     <use x="20%" xlink:href="#g2"/>

   </g>

 </svg>