Joystick window control?

I am building a PC for my 80 year old grandmother who is losing her sight.

The idea is to set it up the PC to boot into firefox in full screen mode, and set her homepage to a RSS feed of stuff she will like.

She will have no keyboard

Using the 21inch touch screen she can then touch any of the items she finds interesting.

To shut down she just presses the power button.

The one remaining question is how she moves the windows around. When Firefox is on very high zoom you need to be able to easily scroll vertically and horizontally.

Will a standard USB joystick do this? Can I set a button on the joystick to take her back to her firefox homepage?

You may find interesting applications like:

js2mouse qjoypad

They let mapping (standard) joystick events into mouse and keyboard events. Firefox has many keyboard short-cuts that you can use to control it (e.g. Alt+Home -> goes to homepage).

Good luck.

You can also edit the scripts for every button, e.g. add a zoom-in function to the "A" button. There are several programs for this, Google it:p!