function verif(email) {
	var arobase = email.indexOf("@")
	var point = email.lastIndexOf(".")
	if((arobase < 2)||(point + 2 > email.length)||(point < arobase+2)) { alert('Cet e-mail n\'est pas valide !');return false }
	else { document.newsletter.submit();return true }
}

function open_bloc(x){
var d=document.getElementById(x);
d.style.display="block";
}

function close_bloc(){
for(var i=1;i<=2;i++)
	{	var d=document.getElementById('menu'+i);
		d.style.display="none";
	}
}