From webview fire event action, the addEventListener in titanium open controller multiple time

When i am opening simple webview that's ok. But when i want to open other window from fire event in html file by addEventListene in titaniumit open the window multiple time. please help... I am using Titanium SDK 1.8. In windows

Here is my webview javascript code..

<script>
            $("#all-feed").click(function(){
                Ti.App.fireEvent('goToAllFeedPage', {code:"cFeed"});  
                // return false;
            });
</script>

Titanium code which receive this by addEvent Listner

Ti.App.addEventListener('goToAllFeedPage', function(data) { 
        Alloy.createController('leadFeeds');
        // winFeed.window.close();      
    });

var winFeed = {};
    winFeed.window = Titanium.UI.createWindow();
    var webFeed;    //-->> Weview
 
        webFeed = Titanium.UI.createWebView({url:'/www/lead-feeds.html'});
 
    winFeed.window.add(webFeed);  //-->> Add Webview
    winFeed.window.open();        //-->> Open The Webview