function makeRequest(url, async){
	var httpRequest;
	var theObject;
				
	if (window.XMLHttpRequest)
	{ // Mozilla and other browsers
		httpRequest = new XMLHttpRequest();
		if (httpRequest.overrideMimeType) {
			httpRequest.overrideMimeType('text/xml');
		}
	} 
	else if (window.ActiveXObject)
	 { // IE
		try
		{
			httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} 
		 catch (e) {
			try {
				httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} 
			 catch (e) {}
		 }
	}
	if (!httpRequest)
	{
		//alert("Errore?");
	}
	httpRequest.onreadystatechange = function() { 
	  if (httpRequest.readyState == 4) {
	   if ( httpRequest.status == 200 ) {
			//		
			} else {
			//alert("Errore?");
		}
	  }
	};
	httpRequest.open('GET', url, async);
	httpRequest.send(null);
}


function updateSession(UID) {
	var serverUrl = 'http://www.porreca.it/updateSession.asp?ck=' + (new Date()).getTime() + '&uid=' + UID; 
	makeRequest(serverUrl, true);
}

function checkSession(UID) {
	var serverUrl = 'http://www.porreca.it/checkSession.asp?ck=' + (new Date()).getTime() + '&uid=' + UID; 
	makeRequest(serverUrl, true);
}

function updateIP(IP) {
	var serverUrl = 'http://www.porreca.it/updateIP.asp?ck=' + (new Date()).getTime() + '&ip=' + IP; 
	makeRequest(serverUrl, true);
}

function test() {
	var serverUrl = 'http://95.240.244.168/ASP/nuovoUtente.asp'; 
	makeRequest(serverUrl, true);
}