var http_request = false;
var nomeDiv = "";

function Countdown(secondi) {
	var elem = document.getElementById("countdown");
	var minuti = Math.floor(secondi / 60);
	var rimanenti = secondi - (minuti*60);
	elem.innerHTML = minuti + ' min ' + rimanenti + ' sec';
	secondi--;
	if( secondi>0 )
		setTimeout("Countdown("+secondi+")", 999);
}

function ConfermaAzione(txt) {
	if( window.confirm(txt) )
		return true;		
	else
		return false;
}

function cambiaClasse(id, classe) {
	document.getElementById(id).className = classe;
}

function makeRequest(url,getvar,funzione) {
	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('Impossibile creare un istanza XMLHTTP (refresh fallito)');
		return false;
	}	
	http_request.onreadystatechange = funzione;
	http_request.open('POST', 'script/' + url + '.php', true);
	http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	http_request.send(getvar);
}

function cambiaDiv() {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			document.getElementById(nomeDiv).innerHTML = http_request.responseText; 
		}
		else
			document.getElementById(nomeDiv).innerHTML = "errore temporaneo..";
	}
	else
		document.getElementById(nomeDiv).innerHTML = '<img src="css/icon/waiting.gif" alt="" />';
}	

function ricarica(dove, path, get) {
	nomeDiv = dove;
	makeRequest(path, "_ACCESSO=1" + get, cambiaDiv);
	return true;
}