TABLE VIEW REFRESH

Hi, I have a problem, I created a table view on one page (page.js) that loads data from XHR (here's the code):

var win = Ti.UI.currentWindow;
function createwindow(itemList) {
    var section = Ti.UI.createTableViewSection();
    var tableView = Titanium.UI.createTableView({ 
        top:20,
        bottom:52,
        width:320,
        height:344,
        data:[], 
        style:Titanium.UI.iPhone.TableViewStyle.PLAIN,
        backgroundColor:'transparent'
    }); 
    for (var c=0;c < itemList.length;c++){      
    var datas= [];
    datas[0] = section;
            var row = Titanium.UI.createTableViewRow({
                height:'50',
                selectedBackgroundColor:'#b40000',
                className: "row_" + c,
                hasChild:true
            });  
            var title = null;
            var cell_bck = '#fff';
            var squadra_casa = 
itemList.item(c).getElementsByTagName("squadracasa").item(0).text;
            var squadra_fuori = 
itemList.item(c).getElementsByTagName("squadrafuori").item(0).text;
 
            var squadraLabelL = Titanium.UI.createLabel({  
                text:squadra_casa, 
                width:100,  
                top:3, 
                left: 30,
                height:44,  
                textAlign:'left',  
                color:'#fff',  
                font:{  
                    fontFamily:'Trebuchet 
MS',fontSize:13,fontWeight:'normal'  
                }  
            });  
 
            var squadraLabelR = Titanium.UI.createLabel({  
                text:squadra_fuori, 
                width:95,  
                top:3, 
                left: 185,
                height:44,  
                textAlign:'right',  
                color:'#fff',  
                font:{  
            fontFamily:'Trebuchet MS',fontSize:13,fontWeight:'normal'  
                }  
            });
            row.add(squadraLabelL);
            row.add(squadraLabelR);
            section.add(row);
 
        }
        tableView.setdata([]);
        tableView.setData(datas);
 
    win.add(tableView); 
 
};
function loadXml () {
    var url = 'http://www.myserieb.it/feed_matches.php';
    xhr = Titanium.Network.createHTTPClient();
    xhr.onload = function()
    {
 
        var xml = this.responseXML;
        var channel = 
xml.documentElement.getElementsByTagName("channel");
 
        feedTitle = 
channel.item(0).getElementsByTagName("title").item(0).text;
 
        Titanium.UI.currentWindow.title = feedTitle;
        var itemList = xml.documentElement.getElementsByTagName("item");
        Ti.API.info('found '+itemList.length+' items in the RSS feed');
        createwindow(itemList);
 
    };
 
    xhr.open('GET',url);
    xhr.send(); 
};
loadXml () ;

the page with the table view, is launched from the home as well:

var liveWindow = Titanium.UI.createWindow({  
    title:'Live',
    backgroundColor:'black',
    tabBarHidden: false,
    navBarHidden: false,
    barColor: '#000',
    backgroundImage: '../img/stagioneBackgroundNero.png',
    url: "page.js"
});
 
liveButton.addEventListener('click', function(e) {
 
    Titanium.UI.currentTab.open(liveWindow,{animated:true});
 
});

The first visit to that page all ok. But if I go out and return the table view has problems. on the page it seems there are two table view overwritten. I have read many post around about the same problem but none that solve my problem. Can you help me? Thank you all

I us iOS. I have made a table that works correctly the first time I open it.

When I exit and get back the second time I find the table open correctly but find another one that covers the newly built table. I'm closing the window in this way.

var b = Titanium.UI.createButton({ title:'Chiudi', style:Titanium.UI.iPhone.SystemButtonStyle.PLAIN }); win.setLeftNavButton(b); b.addEventListener('click',function() { win.close(); });