function writeto() {
    var utilisateur = "molusk";
    var domain = "nomolusk";
    var pays  ="be";
    var atsign = String.fromCharCode(64);  // @
    var point  = String.fromCharCode(46);  // "."
    var adr =  utilisateur + atsign + domain + point + pays;
    document.write(
    "<" + "a" + " " + "href=" + "ma" +String.fromCharCode(105) + "lto" +String.fromCharCode(58) + adr +" class=lienDroit>ema" +String.fromCharCode(105) + "l" + "</a>");
  }