Ti.App.Eventlistener...

I created 3 pages which contains webview1,webview2,webview3. in page1- Ti.App.addEventListener('app:fromwebview', function()); Ti.App.addEventListener('app:savedata', function());

also page 2 and page3 contains same event listeners with different functionality. But when i load page1 work perfectly, when i load page2 then it calls the page1 eventlisteners not calls the page2 eventlistener why?