The 'Back' feature is not working under chrome extension

The 'Back' feature is not working under chrome extension

Hey,

I've developed with this little tool to help users solving 'words games'.
In iPhone/Andriod it's working great but as I've put it as chrome extension everything is working fine except the 'back' button that do nothing.
The tool is using jQuery 1.5 and JQM 1.3a

Thanks,
Ido