var my_window = "";



function close() {
  // seulement si la fenêtre existe déjà
  if (my_window) {
     my_window.close();
     my_window = null;
  }
}





function open_window(page, my_width, my_height) {

  if (my_window) {

   my_window.close();
   my_window= null;
  }

   my_window= window.open(page, "", "scrollbars=no,menubar=no,toolbar=no,resizable=no,width=" + my_width + ",height=" + my_height);
   
}


function open_window_with_elevator(page, my_width, my_height) {

  if (my_window) {

   my_window.close();
   my_window= null;
  }

   my_window= window.open(page, "", "scrollbars=yes,menubar=no,toolbar=no,resizable=no,width=" + my_width + ",height=" + my_height);
   
}