function inscription( obj ) {
	formDisable();
	var mail = obj.mail.value;
	var httpRequest = null;
	if ( window.XMLHttpRequest || window.ActiveXObject ) {
		if ( window.XMLHttpRequest ) {
			httpRequest = new XMLHttpRequest(); 
		} else { // Internet Explorer < 7
			try {
				httpRequest = new ActiveXObject( "Msxml2.XMLHTTP" );
			} catch(e) {
				httpRequest = new ActiveXObject( "Microsoft.XMLHTTP" );
			}
		}
	} else {
		alert( "Votre navigateur ne supporte pas l'objet XMLHTTPRequest..." );
		return;
	}
	httpRequest.onreadystatechange = function() {
		if ( httpRequest.readyState == 4 ) {
			if ( httpRequest.status == 200 ) {
				if ( httpRequest.responseText == "1" ) {
					remerciement();
				} else if ( httpRequest.responseText == "2" ) {
					formActive();
					document.getElementById( "alert" ).innerHTML = "L'adresse n'est pas valide, veuillez recommencer.";
				} else if ( httpRequest.responseText == "3" ) {
					formActive();
					document.getElementById( "alert" ).innerHTML = "L'addresse est déjà enregistrée.";
				} else {
					formActive();
					document.getElementById( "alert" ).innerHTML = "Impossible d'enregistrer une adresse, veuillez réessayez ultérieurement.";
				}
			} else {
				formActive();
				document.getElementById( "alert" ).innerHTML = "Impossible d'enregistrer une adresse, veuillez réessayez ultérieurement.";
            }
		}
	};
	httpRequest.open( 'POST', './requetes/newsletter-inscription.php', true );
	httpRequest.setRequestHeader( "Content-Type", "application/x-www-form-urlencoded" ); 
	httpRequest.send( 'mail='+ mail );
}
function formDisable() {
	document.getElementById( "mail" ).style.disabled = true;
	document.getElementById( "submit" ).style.disabled = true;
	document.getElementById( "submit" ).value = "Patientez";
	document.getElementById( "submit" ).blur();
	document.getElementById( "chargement" ).style.visibility = "visible";
}
function formActive() {
	document.getElementById( "mail" ).style.disabled = false;
	document.getElementById( "submit" ).style.disabled = false;
	document.getElementById( "submit" ).value = "S'inscrire";
	document.getElementById( "chargement" ).style.visibility = "hidden";
}
function remerciement() {
	document.getElementById( "alert" ).innerHTML = "";
	document.getElementById( "newsletter" ).style.display = "none";
	document.getElementById( "remerciement" ).style.display = "block";
}
function mail() {
	formActive();
	document.newsletter.reset();
	document.getElementById( "remerciement" ).style.display = "none";
	document.getElementById( "newsletter" ).style.display = "block";
}