var CaricaPagina_DatiPagina = ''

var req
var semaforo=true
var imgProgress = new Image();
imgProgress.src = '/img/progressbar.gif';
function CaricaPagina(url, target, method, parameters, strFunzione) {
//alert(url)
	if(semaforo){
		semaforo=false
		url+=(url.indexOf('?')>0)?'&':'?';
		url+='nocache='+NumeroCasuale(0,9999);
//alert(url);
//out.innerHTML+=('carico pagina: <a href="'+url+'" target="_blank">'+url+'</a><br>\n');
		if(method == undefined || method == '')method="get" 
		if(imgProgress!=''){
			if(typeof(target)!='string'){
				for(var i=0;i<target.length;i++)
					document.getElementById(target[i]).innerHTML = '<img src='+imgProgress.src+'>';
			}
			else{
				if(target!=''){
					//document.getElementById(target).innerHTML = 'caricamento dati in corso...';
					document.getElementById(target).innerHTML = '<img src='+imgProgress.src+'>';
				}
			}
		}
		if(window.XMLHttpRequest){
			req = new XMLHttpRequest();
		}else if(window.ActiveXObject){
			req = new ActiveXObject("Microsoft.XMLHTTP");
		}
		if(req){
			req.onreadystatechange = function() {
				CaricaPaginaDone(url, target, method, strFunzione);
			};
			req.open(method, url, true);
			if ( (method == "POST") || (method == "post") ){
		//alert('post: '+url)
				req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
				req.send(parameters);
			}
			else req.send("");
		}
	}
}  

function CaricaPaginaDone(url, target, method, strFunzione) {
	var stringa
//alert('readyState: '+req.readyState)
//out.innerHTML+='readyState: '+req.readyState+'<br>'
	if (req.readyState == 4) { 
		semaforo=true
		if(typeof(target)!='string'){
			for(var i=0;i<target.length;i++){
				if (document.getElementById(target[i])){
					if (req.status == 200) { 
						stringa = req.responseText+'';
						document.getElementById(target[i]).innerHTML = stringa;
					}else{
						document.getElementById(target[i]).innerHTML="Error:\n"+req.statusText+" "+req.responseText;
					}
//out.innerHTML+=('<b>è stata caricata la pagina: <a href="'+url+'" target="_blank">'+url+'</a></b><br>\n')
//alert('è stata caricata la pagina: '+url)
				}
			}
		}
		else{
//out.innerHTML+=target+'<br>';
			if (document.getElementById(target)){
				if (req.status == 200) { 
					stringa = req.responseText+'';
//alert(stringa)
					
//alert('è stata caricata la pagina: '+url)
					document.getElementById(target).innerHTML = stringa;
					var re=/<\!--\$dati:([^(-->)]*)-->/gi
					re=/<\!--\$dati:(.*)\$dati-->/
					var ris = req.responseText.match(re);
		
					if(ris && ris[1])CaricaPagina_DatiPagina=ris[1]
					else CaricaPagina_DatiPagina=''
		//alert(CaricaPagina_DatiPagina)
					if(strFunzione){
						//alert(strFunzione)
						setTimeout(strFunzione,1);
					}
				}else{
//alert(req.responseText)
					document.getElementById(target).innerHTML="Error:\n"+req.statusText+" "+req.responseText;
					CaricaPagina_DatiPagina='';
				}
//	out.innerHTML+=('<b>è stata caricata la pagina: <a href="'+url+'" target="_blank">'+url+'</a></b><br>\n')
			}
		}
	}
}


function CaricaPaginaDoneConDati(url, target, method) {
	if (req.readyState == 4) { 
		if (req.status == 200) { 
			document.getElementById(target).innerHTML = req.responseText;
			var re=/<\!--\$dati:([^(-->)]*)-->/gi
			re=/<\!--\$dati:(.*)\$dati-->/
	//alert(req.responseText)
			var ris = req.responseText.match(re);
			if(ris[1])CaricaPagina_DatiPagina=ris[1]
			else CaricaPagina_DatiPagina=''
			AnalizzaDatiPagina();
		}else{
			CaricaPagina_DatiPagina=''
			document.getElementById(target).innerHTML="Error:\n"+req.statusText+" "+req.responseText;
			if(document.getElementById('boxActForm')){
				document.getElementById('boxActForm').innerHTML="Error:\n"+req.statusText+" "+req.responseText;
			}
		}
	}
}

function CaricaPaginaConDati(url, target, method, parameters) {
	if (method == undefined)method="get" 
	//document.getElementById(target).innerHTML = 'caricamento dati in corso...';
	if(imgProgress!='')
		document.getElementById(target).innerHTML = '<img src='+imgProgress.src+'>';
	if(window.XMLHttpRequest){
		req = new XMLHttpRequest();
	}else if(window.ActiveXObject){
		req = new ActiveXObject("Microsoft.XMLHTTP");
	}
	if(req){
		req.onreadystatechange = function() {
			CaricaPaginaDoneConDati(url, target, method);
		};
		req.open(method, url, true);
		if ( (method == "POST") || (method == "post") ){
			req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
			req.send(parameters);
		}
		else req.send("");
	}
}