<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:html="http://www.w3.org/1999/xhtml"
     onload="setTimeout(boom, 30);"
     class="reftest-wait">

<html:script>

function boom()
{
  try {
    document.getElementById("defs").getBBox();
  } catch(e) {
    // getBBox is expected to throw, because defs is not displayed.
    document.documentElement.removeAttribute("class");
  }
}

</html:script>

<defs id="defs" />

</svg>