<html>
<style>
#floater { float: left }
</style>
<body>

<div>
Test anonymous boxes removal on style change. This should not crash or hang. Render tree dump should not gain additional anonymous boxes.
<div id=floater></div><div></div></div>

<script>
var floater = document.getElementById("floater");
floater.offsetWidth;
floater.style.float = "none";
</script>

</body>  
</html>