function cms_popupWindow(url, parameters, width, height, centered, title)
{
    if(window.showModalDialog && navigator.userAgent.indexOf("Firefox") == -1)
    {
        var features = "dialogWidth:" + width + "px;dialogHeight:" + height + "px;centered:" + centered + ";";
        window.showModalDialog(url, parameters, features);
    }
    else
    {
        var left = "0";
        var top = "0";
        if(centered == "yes" || centered == "1")
        {
                        left = ((screen.availWidth - width) / 2).toString();
                        top = ((screen.availHeight - height) / 2).toString();
        }
        var features = "width=" + width + ",height=" + height + ",left=" + left + ",top=" + top + ",scrollbars=yes,toolbar=no,modal=yes,resizable=yes";
        window.open(url, title, features, true);
        title.focus();
    }
}