<!DOCTYPE html>
<html>
<body>
<p>This page tests that you can correctly clear a video object's poster attribute in a beforeload listener without causing a crash.</p>
<div id="console">FAIL: test didn't run to completion.</div>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}
x = document.createElement('video');
x.addEventListener('beforeload', function () {
    x.removeAttribute('poster');
    document.getElementById('console').textContent = 'PASS: test completed.';
    if (window.testRunner)
        testRunner.notifyDone();
}, false);
x.poster = 'foobar';
</script>
</body>
</html>