About offline app in Sencha Touch

I need to create a offline app and to cache the home page.
This is my manifest file:

Code:

---

CACHE MANIFEST

CACHE:
index.html
app.json
app.js
lib/sencha-touch-all.js
app/view/index/Card.js


NETWORK:
*

---

I cached the app/view/index/Card.js. But when the app is loaded, the app fetches the Card.js by the URL of "http://test.com/app/view/index/Card.js?_dc=1348797658172". It seems that the "_dc=1348797658172" disabled my Card.js cache.

So any idea to solve the problem?!:-?
Thanks..

Code:

---

Ext.Loader.setConfig({
    disableCaching: false
});
Ext.application({/*build your app*/});

---