function openWithSelfMain(url, name, width, height, returnwindow) {
    var options = "width=" + width + ",height=" + height + "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no";
    new_window = window.open(url, name, options);
    window.self.name = "main";
    new_window.document.clear();
    new_window.focus();
    if (returnwindow != null) {
        return new_window;
    }
}