<!DOCTYPE html>
<html>
<style>
.runin { display: run-in }
</style>
</head>
<body>
<div>
    <div class="runin">This should </div>
    <div id="t1">run in.</div>
</div>
</body>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
document.body.offsetTop;
document.getElementById('t1').style.display = 'none';
</script>
</html>