contact_on = new Image;
contact_on.src = "http://site.gulliver.com/b20070111b0/web/INDIGO/bt_menu/contact_on.gif";
contact_off = new Image;
contact_off.src = "http://site.gulliver.com/b20070111b0/web/INDIGO/bt_menu/contact.gif";

societe_on = new Image;
societe_on.src = "http://site.gulliver.com/b20070111b0/web/INDIGO/bt_menu/societe_on.gif";
societe_off = new Image;
societe_off.src = "http://site.gulliver.com/b20070111b0/web/INDIGO/bt_menu/societe.gif";

produits_on = new Image;
produits_on.src = "http://site.gulliver.com/b20070111b0/web/INDIGO/bt_menu/produits_on.gif";
produits_off = new Image;
produits_off.src = "http://site.gulliver.com/b20070111b0/web/INDIGO/bt_menu/produits.gif";

maison_on = new Image;
maison_on.src = "http://site.gulliver.com/b20070111b0/web/INDIGO/img/maison_on.jpg";
maison_off = new Image;
maison_off.src = "http://site.gulliver.com/b20070111b0/web/INDIGO/img/maison.jpg";

mail_on = new Image;
mail_on.src = "http://site.gulliver.com/b20070111b0/web/INDIGO/img/mail_on.jpg";
mail_off = new Image;
mail_off.src = "http://site.gulliver.com/b20070111b0/web/INDIGO/img/mail.jpg";

function valide_mail(mail) {
 
  if (mail.match(/^[a-z0-9]+([\.\-\_][a-z0-9]+)*@[a-z0-9]+([\.\-][a-z0-9]+)*\.[a-z]{2,}$/i)) { 
	 return true; 
  }
  else{
   alert("Adresse mail non valide"); 
	return false;
  }
}

function valide_newsletter ()
{
if (document.form_newsletter.email.value.length == 0 || !document.form_newsletter.email.value.match(/^[a-z0-9]+([\.\-\_][a-z0-9]+)*@[a-z0-9]+([\.\-][a-z0-9]+)*\.[a-z]{2,}$/i))
   {
      alert ("Vous devez saisir une adresse E-Mail valide (prenom.nom@monemail.com).");
      return false;
   }

  return true;
}