<html class="reftest-wait"> <head> <script> function boom() { var iframe = document.getElementById('inner'); iframe.addEventListener("load", function() { document.documentElement.removeAttribute("class"); }, false); iframe.src = "data:text/html,"; dump("Outer onload\n"); } </script> </head> <body onload="boom()"> <iframe src="428844-1-inner.xhtml" id="inner"></iframe> </body> </html>