{
    //Script found at: http://www.quackit.com/javascript/popup_windows.cfm
    var popupWindow = null;
    function centeredPopup(url, winName, w, h, scroll) {
        LeftPosition = (screen.width) ? (screen.width - w) / 2 : 0;
        TopPosition = (screen.height) ? (screen.height - h) / 2 : 0;
        settings =
    'height=' + h + ',width=' + w + ',top=' + TopPosition + ',left=' + LeftPosition + ',scrollbars=' + scroll + ',resizable'
        popupWindow = window.open(url, winName, settings)
    }
}