var oldCont, req;
didascalie1 = new Array(
    "Stanza degli orologi", 
    "Stanza di lavoro", 
    "Stanza di Anna", 
    "Stanza dei contatti",
    "Home page",
	"Stanza dei tableaux");
didascalie2 = new Array(
    "Le opere di Anna", 
    "Come lavora Anna", 
    "Info e mostre", 
    "I recapiti",
    "",
	"Altre produzioni");

function set_didascalia(par)
{
    if (par!=4)
        document.getElementById('didascalie').innerHTML="<h2>"+didascalie1[par]+"</h2><h3>"+didascalie2[par]+"</h3>";
    else
        document.getElementById('didascalie').innerHTML="<h2 style=\"color: #CCCCCC\">"+didascalie1[par]+"</h2><h3>"+didascalie2[par]+"</h3>";
}

function unset_didascalia()
{
    document.getElementById('didascalie').innerHTML="";
}

/*function  apri_finestra(para)
{
    window.open('finestra_orologio.php?oro='+para,'finestra_orologio','width=650,top=0,left=0,scrollbars=yes,status=no');
}*/

function apri_finestra(para) 
{
    oldCont=document.getElementById('main').innerHTML;
    /*document.getElementById('main').innerHTML="<h2>Ciao</h2><img src=\""+decodeURIComponent(para)+"\" /><a href=\"javascript:;\" onclick=\"torna()\">Torna</a>";
    alert(document.getElementById('main').innerHTML);*/
    
    //branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = processReqChange;
        req.open("GET", para, true);
        req.send(null);
    //branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        req =new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
            req.onreadystatechange = processReqChange;
        req.open("GET", para, true);
        req.send();
        }
    }
}

function processReqChange ()
{
    //only if req show "complete"
    if (req.readyState == 4) {
        //only if "OK"
        if (req.status == 200) {
            /*alert("success");*/
            document.getElementById('main').innerHTML=req.responseText;
            //alert (req.responseText);
        } else {
            alert ("There was a  problem retrieving data:\n"+ req.statusText);
        }
    }
}

function torna() {
    document.getElementById('main').innerHTML=oldCont;
}