function verif(email) 
{
	var arobase = email.indexOf("@")
	var point = email.lastIndexOf(".")
	if((arobase < 2)||(point + 2 > email.length)||(point < arobase+2)) 
	{ 
		alert("Cet Email est erroné !");
		return false 
	}
	else 
	{ 
	if (contact.sender_name.value=="" || contact.sender_surname.value=="" || contact.message.value=="")
		{
			alert("Veuillez remplir tous les champs marqués d'une étoile");
			return false;
		}
		else
		{
			return true 
		}
	}
}

function ouvre_popup(x)
{
window.open(x,'info','top="200,left=200,width=420,height=320,resizable=no,scrollbars=yes,fullscreen=no');
}