var win = null;
function popup(Page,Nom,w,h,Option) {
  var winl = (screen.width-w)/2;
  var wint = (screen.height-h)/2;
  if (winl < 0) winl = 0;
  if (wint < 0) wint = 0;
  var settings = 'height=' + h + ',';
  settings += 'width=' + w + ',';
  settings += 'top=' + wint + ',';
  settings += 'left=' + winl + ',';
  //settings += '     ,';
  settings += Option;
  win = window.open(Page,Nom,settings);
  win.window.focus();
}