function na_open_window(name, url, left, top, width, height, toolbar, menubar, statusbar, scrollbar, resizable) {
    toolbar_str = toolbar ? 'yes' : 'no'; menubar_str = menubar
    ? 'yes' : 'no'; statusbar_str = statusbar ? 'yes' : 'no'; scrollbar_str = scrollbar
    ? 'yes' : 'no'; resizable_str = resizable ? 'yes' : 'no'; cookie_str = document.cookie;
    cookie_str.toString(); pos_start = cookie_str.indexOf(name); pos_end = cookie_str.indexOf('=',
    pos_start); cookie_name = cookie_str.substring(pos_start, pos_end); pos_start =
    cookie_str.indexOf(name); pos_start = cookie_str.indexOf('=', pos_start); pos_end
    = cookie_str.indexOf(';', pos_start); if (pos_end <= 0) pos_end = cookie_str.length;
    cookie_val = cookie_str.substring(pos_start + 1, pos_end); if (cookie_name == name
    && cookie_val == "done") return; window.open(url, name, 'left=' + left + ',top=' + top + ',width=' + width + ',height=' + height + ',toolbar=' + toolbar_str + ',menubar=' + menubar_str + ',status=' + statusbar_str + ',scrollbars=' + scrollbar_str + ',resizable=' + resizable_str);
}