function test_mail(email){
	if(eval(email.lastIndexOf("@"))<1){
		return false;
	}
	var pos_arobase = eval(email.lastIndexOf("@") + 1);
  var lenght_sdomaine = email.substring(pos_arobase, email.length);
 	if(eval(lenght_sdomaine.lastIndexOf("."))<1){
		return false;
	}
	var pos_domaine = eval(lenght_sdomaine.lastIndexOf(".") + 1);
	var lenght_domaine = email.substring(pos_domaine, email.length);
	var mail_ok=(email.length-(pos_arobase+pos_domaine));
	if(mail_ok<2){
		return false;
	}else{
		return true;
	}
}