<!DOCTYPE html>
<html class="reftest-wait">
<head>
<style type="text/css">
body {
 font-family: sans-serif;
}
#ib1 {
 display: inline-block;
 margin-right: 20px;
}
#ib2 {
 display: none;
 margin-left: 10px;
}
</style>
<script type="text/javascript">
function test() {
 document.getElementById('ib2').style.display = 'inline-block';
 document.documentElement.removeAttribute('class');
}
document.addEventListener('MozReftestInvalidate', test, false);
</script>
</head>
<body>
<div><span id="ib1">Hello</span><span id="ib2">Kitty</span></div>
</body>
</html>