function valider() {
var form_err = " "


var verim = 0;
for (i=1; i<document.FORMCONTACT.EMAILCONTACT.value.length -4; i++) {
if ( document.FORMCONTACT.EMAILCONTACT.value.charAt(i) == "@") {
verim = 1;
}} 
if ( verim == 0) {
form_err = "Email invalide !\n";
} 




if ( document.FORMCONTACT.NOM.value.length < 1) {
form_err += "le Nom\n";
}
if ( document.FORMCONTACT.PRENOM.value.length < 1) {
form_err += "le Prenom\n";
} 

if ( document.FORMCONTACT.TEL.value.length < 1) {
form_err += "le téléphone\n";
} 



if ( form_err != " ") {
alert( "Il manque le(s) champs suivant(s) :\n" + form_err);
return false;
}
return true 
}