function conf(message) {
  var agree=confirm(message);
  if (agree){
	  return true;
  }
  else {
	  return false;
  }
}
function affiche(item) { 
  if (document.getElementById(item).style.display == "none") { 
    document.getElementById(item).style.display = "block";
  } 
  else { 
    document.getElementById(item).style.display = "none";
  } 
}
function crypt(User,Domaine){
 window.location.href="mailto:" + User + "@" + Domaine;
}