function createRequestObject() {
	var ro;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer"){
		ro = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
		ro = new XMLHttpRequest();
	}
	return ro;
}

var http = createRequestObject();

var sndFile;
var elementResp;

function handleResponse() {
	if(http.readyState == 4){
		var response = http.responseText;
		document.getElementById(elementResp).innerHTML = response;
	}
}

function sndMail(er, sndFile) {
	var action1 = document.mail.oggetto.value;
	var action2 = document.mail.testo.value;
	http.open('get', sndFile+'?var1='+action1+'&'+'var2='+action2);
	elementResp = er; 
	http.onreadystatechange = handleResponse;
	http.send(null);
}