function popup(n,w,h){
  return window.open("", n, "toolbar=no,scrollbars=no,resizable=no,width=" 
    + w + ",height=" + h);
}
function popup2(n,w,h){
  return window.open("", n, "toolbar=no,scrollbars=yes,resizable=yes,width=" 
    + w + ",height=" + h);
}