<html class="reftest-wait"> <head> <script type="text/javascript"> var i = 0; function bouncy() { var body = document.body; document.documentElement.removeChild(body); document.documentElement.appendChild(body); if (++i < 30) setTimeout(bouncy, 1); else document.documentElement.removeAttribute("class"); } </script> </head> <body onload="bouncy();"><span id="a"></span><span style="filter: url(#a);"><span style="filter: url(#a);">B</span></span></body> </html>