var requete = null; 

function creerRequete() {
    try {
        requete = new XMLHttpRequest(); 
    } catch (microsoft) {
     
        try {
            requete = new ActiveXObject('Msxml2.XMLHTTP');
        } catch(autremicrosoft) {
        
            try {
                requete = new ActiveXObject('Microsoft.XMLHTTP');
            } catch(echec) {
         
                requete = null;
            }
        }
    }
    if(requete == null) {
        alert('Votre navigateur ne semble pas supporter les object XMLHttpRequest.');
    }
}
function actualite() {
	creerRequete();
	
	
	
	var url = 'ajax.php';
	
	requete.open('GET', url, true);
	
	requete.onreadystatechange = function() {
		if(requete.readyState == 4) {
			if(requete.status == 200) {
				document.getElementById('idajax').innerHTML = requete.responseText;
			}
		}
	};
	
	requete.send(null);
}


function check_form() {


    if(document.newsletter.email.value=="") {

	alert("Veuillez saisir votre email.");

	document.newsletter.email.focus();

	return false;

    }

    if(!document.newsletter.email.value.match("^.+@.+\\..+$")) {

	alert("Veuillez saisir votre email valide.");

	document.newsletter.email.focus();

	return false;

    }
   
}