// JavaScript Document
function checkMail(email)
{
	//var x = document.forms[0].email.value;
	var x = email;
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(x)){
		return true;
	}else{
		alert('Cet email est invalide');
		return false;
	}
}