function window_open_kb(kb_name) {
        w=window.open(kb_name,"kb",
                      "width=265,height=390, menubar=no,scrollbar=auto,resizable=no");
          w.focus();
  }

function window_open_kb_big(kb_name) {
        w=window.open(kb_name,"kb",
                      "width=430,height=650, menubar=no,scrollbars=yes,resizable=yes");
          w.focus();
}