<html> 
<body>
<script> 
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.setCanOpenWindows();
    testRunner.setPopupBlockingEnabled(true);
    testRunner.setCloseRemainingWindowsWhenComplete(true);
}

win = window.open("about:blank");
alert(win ? "FAIL" : "PASS");
</script> 
</body> 
</html>