// Envoyer le contenu d'un formulaire et mettre à jour le DIV correspondant...
function sendPicture(arg, div) {
		var form = document.getElementById("newPicture");
		var data = arg + "&pic=" . form.picturefile.value;
		var url = "ajax/addPicture.php" ;
		// var data = "pic=" . form.picturefile.value;
		// var url = "ajax/addPicture.php?" + arg;
		var xhr_object = null;
	    xhr_object = new XMLHttpRequest();
		xhr_object.open("POST", url, true);
	    xhr_object.onreadystatechange = function() {
			// afficher le même article en mode édition
			if (xhr_object.readyState == 4) {
				openPicLibrary(arg, div);
			}
	    }
		xhr_object.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		xhr_object.send(data);
}