var http_request = false;
function makeRequest(url,div,mode) {
	//document.getElementById("wrapper").style.cursor = "wait";
	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 = function alertContents() {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			if(typeof(mode) == "undefined"){
				document.getElementById(div).innerHTML = document.getElementById(div).innerHTML + http_request.responseText;
			}else{
				if(mode == "new"){
					document.getElementById(div).innerHTML = http_request.responseText;
				}
			}
		} else {
			alert("Ci sono stati problemi nell'eseguire la richiesta: contattare l'amministratore di sistema");

		}
		//document.getElementById("wrapper").style.cursor = "";
	}
}
	http_request.open('GET', url, true);
	http_request.send(null);

}