Buongiorno a tutti!
Ho trovato in giro il seguente codice che apre 5 finestre o tab e dentro ci carica delle pagine. Ogni X secondi aggiorna il tab mostrando una nuova pagina. Le pagine sono specificate all'interno del file HTML stesso.
Il problema è che carica le nuove pagine anche se le vecchie pagine non hanno finito il caricamento. Io vorrei invece che caricasse la nuova pagina solo quando quella vecchia ha finito di caricarsi. Soluzioni?
Grazie!

codice:
<html>

<head><Title>Start Visits</title>
<font size="5"> Ready : Page Visitor
</font>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta http-equiv="Expires" content="0" />
<meta name="keywords" content="No Robot" />
<meta http-equiv="Content-Language" content="fr">
<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">
<script type="text/javascript" src="js/prototype.js"></script>
<script type="text/javascript">
var site = new Array();
var i = 0;
var j = 0;
var nb = 0;
var nbv = 1 ;
var nbf = 5 ; // nb de fenetres
var fenetre = new Array();
var duree = 6000 ;	// TEMPO PER CIASCUNA SCHEDA
var timer ;
var xhr ;
if(duree < 3000) { duree = 3000 ; }
if(nbf > 10) { nbf = 10 ; }
if(nbf < 0) { nbf = 1 ; }
var lll = 250 ;

//LISTA DEI SITI DA VISITARE
site[0] = new Array("http://www.youtube.it");
site[1] = new Array("http://www.google.it");
site[2] = new Array("http://www.html.it");
site[3] = new Array("http://www.virgilio.it");
site[4] = new Array("http://www.yahoo.it");
site[5] = new Array("http://www.sun.com");
site[6] = new Array("http://www.w3c.org");
site[7] = new Array("http://www.ieee.org");

function validation() {

if (window.XMLHttpRequest) {
xhr = new XMLHttpRequest(); // FF et autre
} else if (window.ActiveXObject)  {
xhr = new ActiveXObject("Microsoft.XMLHTTP");   // IE
}

xhr.onreadystatechange  = function() {
if(xhr.readyState == 4) {
if(xhr.status == 200) {
document.getElementById("visu_cit").innerHTML = xhr.responseText ;
} else {
document.getElementById("visu_cit").innerHTML = "Errore " + xhr.status ;
}
}
};
}

function openPage() {
if(nb < lll) {
if(fenetre[0] != null && !fenetre[0].closed) {
fenetre[0].location.replace(site[nb]) ;
} else {
fenetre[0] = window.open(site[nb]);
}
nb++;
nbv++;
for(i=1;i<nbf;i++) {
if(nb < lll) {
if(fenetre[i] != null && !fenetre[i].closed) {
fenetre[i].location.replace(site[nb]) ;
} else {
fenetre[i] = window.open(site[nb]);
}
nb++;
}
}

timer = window.setTimeout("openPage() ;", duree, "JavaScript");
document.getElementById("visu_cit").innerHTML = "

 "+(lll-nb)+" exchanges
  "+Math.round((lll-nb)/nbf*duree/1000)+"  secondes
</p>" ;
top.document.title=''+(lll-nb)+' vist. '+Math.round((lll-nb)/nbf*duree/1000)+' sec.' ;
} else {  // fin des ouvertures
timer = window.setTimeout("fenetre[0].close();", 3000, "JavaScript");

document.getElementById("visu_cit").innerHTML = "

 Done</p>" ;
top.document.title=' Done' ;

for(i=1;i<nbf;i++) {
if(fenetre[i] != null && !fenetre[i].closed) {
fenetre[i].close();
}
}
document.getElementById("visu_cit").innerHTML = "<h3>Visits done.</h3>  
 
";
var repmass = function(param1,param2,param3,param4) {
Params = 'link='+param1+'&type='+param2+'&lng='+param3+'&contrib='+param4+'';
new Ajax.Updater('visu_cit','mnmass.php',{method:'GET',parameters:Params});
}
repmass('gip.cipcip','AUT','com','INT');
document.getElementById("infostop").innerHTML = "<a href=\"http://www.mysite.it/share.php\"> Next. </a> 
";
}
if(nbv > 20) { // validation des échanges
nbv = 1 ;
validation() ;
}
}

function verifierEchange() {
// détecter un anti pop-up
var popuptest1 = window.open("Windows Test1","W1","directories=no,height=10,width=10, menubar=no,resizable=no,scrollbars=no,status=no,titlebar=no,top=0,location=no");
if (!popuptest1) {
document.getElementById("visu_cit").innerHTML = "

POP-UP can't appears.
"
+"If you use popup blocking software you need to disable it before visiting page.  <a href=\"javascript:openPage()\">ici</a></p>" ;
alert("If you use popup blocking software you need to disable it before visiting pages. ");
} else {
popuptest1.close();
document.getElementById("visu_cit").innerHTML = "

 "+lll+" exchanges 
 During "+Math.round(lll/(nbf*duree)/1000)+" sec. 
 Parameters : "+duree/1000+"s between "+nbf+" windows.</p>" ;
openPage() ;
}

}
window.onload = verifierEchange();
</script>
</head>

<body>
Visiting page for you...



<div id="visu_cit">
<input type="button" value="Visiting" onClick="javascript:openPage();" tabindex="1">
</div>

<div id="infostop"></div>

</body>
</html>