function valide_info_form(){
  var form = document.info_form;
  var valide = true;
  
 
  if(form.nom.value == ""){
    document.getElementById("nom").innerHTML = "<img title='Erreur' src='images/cross.png'/> Saisir votre nom !";
    form.nom.focus();
    valide = false;
  }
  else{
    document.getElementById("nom").innerHTML = "<img title='Valide' src='images/accept.png'/> <b>Merci !</b>";
  }
  if((form.email.value).search(/^[_a-z0-9-]+(.[_a-z0-9-]+)*[^._-]@[a-z0-9-]+(.[a-z0-9]{2,4})*$/) == -1){
    document.getElementById("email").innerHTML = "<img title='Erreur' src='images/cross.png'/> Adresse email invalide !";
    form.email.focus();
    valide = false;
  }
  else{
    document.getElementById("email").innerHTML = "<img title='Valide' src='images/accept.png'/> <b>Merci !</b>";
  }
  return valide;
}