Turning stylesheets on and off

Hi there,
I have been looking (with no success) for a code snippet that will allow me to have 2 links (view text version and view design version) so I can toggle between having my stylesheet turned on or off. So if the stylesheet is off I should be able to turn it back on again.
I have seen the styleswitchers that obviously switch between sheets but no one to turn on or off.
Any ideas?
Thanks
Karl