If it's an Android device.... (Score 1)

You could take a look at my app, Kiosk Browser SE ( https://market.android.com/details?id=it.automated.android.kiosk.se&feature=search_result ). Kiosk Browser SE will allow you to lock your Android tablet to a specific web site or group of sites preventing end users from escaping to the underlying operating system. You can develop your user interface using HTML, Javascript and CSS – You can even use WebKit based CSS transformations and animations. It also has the ability to load sties from local storage so you don't need to have a network connection. It can be configured via standard Android settings screens or, for larger roll outs, via an xml file stored on the device - this allows you to configure one device in the way you want and then generate the xml file to be copied to other devices. Sorry for the self-pimpage... ScaredyCat