function f_quota() {
			if (xmlHttp.readyState == 0 || xmlHttp.readyState == 4) {
				tipo = encodeURIComponent(document.getElementById("tipoAdesione").value);
				xmlHttp.open("GET","php/ajax.php?r=quota&p="+tipo, true);
				xmlHttp.onreadystatechange = quotaAjax;
				xmlHttp.send(null);
			}
			
		}


		
function quotaAjax() {
	if (xmlHttp.readyState == 4 && xmlHttp.status == 200) {
					var response = xmlHttp.responseXML;
					var root = response.documentElement;
					quota = root.firstChild.data;
					document.getElementById("quota").value = quota.replace('\n', '');
	}

}