function verifievide(objchamp,nbchar) {
 var strchaine;
 strchaine = objchamp.value;
 if (strchaine.length < nbchar)
 {
 alert('Erreur : '+ objchamp.name +' obligatoire.');
 objchamp.value='';
 objchamp.focus();
 return false;
 }
 else
 {
 return true;
 }
}

function verifiemail(objchamp) {
 varemail = objchamp.value;
 ret = varemail.indexOf("@");
 if (ret != -1) {
 ret = (varemail.indexOf(".",ret) != -1);
 if (ret) {return true;}
 }
 alert('Adresse email non valide.');
 // document.annonces.NomAssociation.focus();
 objchamp.focus();
 return false;
}

function verifall() {
 coderet = false;
 coderet = verifiemail(document.formu.EMAIL);
 return coderet;
}