<html>
<head>
<style>
div { background-color: red; width: 100px; height: 100px }
</style>
</head>
<body>
You should see a 100x100 green square below.  If you see any red then the test has failed.
<div></div>
<script>
var s = document.createElement("link");
s.setAttribute("rel", "stylesheet");
s.setAttribute("href", "resources/green.css");
document.body.appendChild(s);
</script>
</body>
</html>