var http_request = false;

function chiamata(url) {
	//url=url.replace(/'/g, "apikex");
	//alert(url);
    http_request = false;

    if (window.XMLHttpRequest) { // Mozilla, Safari,...
        http_request = new XMLHttpRequest();
        if (http_request.overrideMimeType) {
            http_request.overrideMimeType('text/xml');
            // See note below about this line
        }
    } else if (window.ActiveXObject) { // IE
        try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
            try {
                http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
        }
    }

    if (!http_request) {
        alert('Giving up :( Cannot create an XMLHTTP instance');
        return false;
    }
    http_request.onreadystatechange = risposta;
    http_request.open('GET', url, true);
    http_request.send(null);
}

function risposta() {

    if (http_request.readyState == 4) {
    		Risposta=http_request.responseText;
    		//alert(Risposta);
			//alert(document.getElementById('main').innerHTML);
			document.getElementById('main').innerHTML=Risposta;
			alert(Risposta);
			if (Risposta=="Email inviata correttamente."){cancella()}

    }
}