function setSysshutdownPopupPosition()
{
    var sysshutdownFrame = document.getElementById("sysshutdown");    
    sysshutdownFrame.style.display = 'block';    
    var l = (window.screen.width-348)/2;

    sysshutdownFrame.style.left = l + "px";
}

function closeSysshutdownPopup()
{
    var sysshutdownFrame = document.getElementById("sysshutdown");
    sysshutdownFrame.style.display = 'none';    
}