imeLogoffE2k9.Logoff();
    }
    catch (e)
    {
    }
}

/// <summary>
/// Add performance marker which can write ETW trace for clicking logon
/// </summary>
/// <param name="sItemName">Identify string to say start clicking logon</param>
function addPerfMarker(sItemName)
{
    try
    {
        if (window.msWriteProfilerMark)
        {
            window.msWriteProfilerMark(sItemName);
        }
    }
    catch (e)
    {
        // We don't care any exception caused by test code in product, swallow it
   