Kubricks COmment template

I’ve use the Kubricks default comment template with some minor changes. There’s one thing which is not good, and one of my blog viewer suggested it, that is to remove the “autosave” feature, where name, email, and url is autosave.
My viewer was hoping that i can make that feature can be turn off and on, using a checkbox, checking to save or not. He also requested to create a link to delete the cookies created (i suppose that’s how the name, email and url is saved).
Im a php/javascript newbie. Help?