No good error when disconnected

If I close the Airdroid app on my phone and have the desktop page open in my browser there won't come a error. If I click on a button like "Apps" I get a message: "Failed with network error.". That's logic, but if I click on the cross I am back on the site. Isn't it logic if you can't do anything when the connection is gone? For people without any sense about this it will very strange.
I'm sory for my bad English, but I hope you understand it. This isn't a real bug, but it could be better.

Good question. But we also think it's a kind of "offline support". Just kidding. Anyway, HTML 5 brings many new possibilities for offline support for web apps and we'd like to explore it. Thanks.