var dns = "arbre-dor.com" ;
    var pre = "contact" ;
    var objet = "Camping l Arbre d Or *** (Parentis en Born - 40)" ;
	var chez = String.fromCharCode(64);
    document.write ("<a href='mailto:" + pre + chez + dns + "?Subject=" + objet +"'>" + pre + chez + dns + "</a>");