//Vérification mail

function VerifMail(){

a = document.Formulaire.mail.value;
valide1 = false;
	
for(var j=1;j<(a.length);j++){
if(a.charAt(j)=='@'){
if(j<(a.length-4)){
for(var k=j;k<(a.length-2);k++){
if(a.charAt(k)=='.') valide1=true;
}
}
}
}
if(valide1==false) alert("adresse e-mail non-valide");
return valide1;
}