function popup(file) {
   url = "../presse/" + file;
   mypopup = window.open(url, "file", "width=400,height=400,scrollbars=yes");
  }
  
  function popup2(file) {
   url = "presse/" + file;
   mypopup = window.open(url, "file", "width=400,height=400,scrollbars=yes");
  }