function affichage() {
   FenetreAffichage = window.open('','NouvelleFenetre', 'toolbar=no,status=no,width=300,height=200')
   FenetreAffichage.document.write("There is your reservation");
   FenetreAffichage.document.write("<br><br><b>Your first name : </b>" + document.formulaire1.Nom.value);
   FenetreAffichage.document.write("<br><b>Your last name:  </b>" + document.formulaire1.Prénom.value);
   FenetreAffichage.document.write("<br><b>Your E-mail :   </b>" + document.formulaire1.email.value);
   FenetreAffichage.document.write("<br><b>Number of places:   </b>" + document.formulaire1.Nombreplaces.value);
    FenetreAffichage.document.write("<br><b>Date:   </b>" + document.formulaire1.Date.value);
   FenetreAffichage.document.write("<br>");
   
   }