function news_spoil_aff(spoil_clic){
  var id_aff=spoil_clic.parentNode.lastChild.firstChild.id;
  if(document.getElementById(id_aff).style.visibility == "visible"){
    document.getElementById(id_aff).style.visibility="hidden";
    var texte_span=spoil_clic.innerHTML='Cliquez ici pour afficher le texte :';
   }
   else
   {
    document.getElementById(id_aff).style.visibility="visible";
    var texte_span=spoil_clic.innerHTML='Cliquez ici pour masquer le texte :';
   }
}