function IsMail(mailteste)

{
	var reg = new RegExp('^[a-z0-9]+([_|\.|-]{1}[a-z0-9]+)*@[a-z0-9]+([_|\.|-]{1}[a-z0-9]+)*[\.]{1}[a-z]{2,6}$', 'i');

	if(reg.test(mailteste))
	{
		return(true);
	}
	else
	{
		return(false);
	}
}
function valid_newsletter(){
	var validation = true;
	var form = document.getElementById("NEWSLETTER_form");
	if(!IsMail(form.email.value) || form.email.value == "exemple@exemple.com"){
		form.email.style.borderColor = "#990000";
		validation = false;
	}else{
		form.email.style.borderColor = "#E2E2E2";
		}
	if(validation == true){
		form.submit();
		return true;
	}else{
		return false;	
	}
}