function ouvrir_doc(fichier)
  {  
  l = screen.availwidth - 170;
  h = screen.availheight - 280;
  arg = "width=" + "l" + " , height=" + h + " , top=150, left=150, resizable=yes, scrollbars=yes, location=no, status=no, menubar=no, toolbar=no";
  window.open(fichier, "Document", arg);
  }

function ouvrir_pop(fichier)
  {
  l = screen.availwidth - 170;
  h = 120;
  t = screen.availheight - 220;
  arg = "width=" + l + ", height=" + h + ", top=" + t + ", left=150, resizable=yes, scrollbars=yes, location=no, status=no, menubar=no, toolbar=no";
  window.open(fichier, "Pop", arg);
  }