<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <script type="text/javascript">
    function runTest()
    {
        if (window.testRunner)
            testRunner.dumpAsText();

        var outputText = document.getElementById("output");

        document.getElementById('target').setAttributeNS('ns', 'title', 'value');
        if (document.getElementById('target').outerHTML.match('xmlns="ns"'))
          outputText.textContent = 'FAIL: ' + document.getElementById('target').outerHTML;
        else
          outputText.textContent = "PASS";
    }
    </script>
</head>
    <body onload="runTest()">
        <div id="target"/>
        <div id="output"/>
    </body>
</html>