How to run a codeigniter application on offline mode

[eluser]Jack Taylor[/eluser]
Hi All,

I am using CI just for last one years, I develop several application on it. But now a days I think that how we can run an application on offline mode [internet not available]. I am thinking on it. Can someone suggest me that how a CI application on offline mode? How much I have to change on my existing application.

Thanks
Jack