<!DOCTYPE html>
<html class="reftest-wait">
<link rel='stylesheet' type='text/css' href='style.css'>
<script>
function loadHandler()
{
frames[0].document.getElementsByTagName('input')[0].onfocus = function() {
document.documentElement.removeAttribute('class');
}
frames[0].document.getElementsByTagName('input')[0].focus();
}
</script>
<body onload="loadHandler();">
<iframe src="data:text/html,<input>"></iframe>
<input></input>
</body>
</html>