Thanks for your help, maybe I can clarify a little. Then I'll go check into some specifics with forms.
The form I used in my example above IS a set of 6 radio buttons, one for each player. When one is clicked, that player's token appears, the other 5 switch to hidden.
Saving this to local drive remembers the player turn for the next time the browser is opened. This is all.
Not sure how forms are called upon now in HTML5, I have to go investigate.
I only code as a hobby, and just my boardgame site (which probably will never go ONline because my coding skills are still questionable in alot of areas, but I only wanted to make the site to help me playtest a boardgame. So a save ability would be very handy)
Thanks again everyone. Feel free to add some more advice. I've already amended the code from my earlier post, so some earlier comments helped.
PS. the selectedIndex thing... yes (facepalm) just wrong. I have 2 little kids running around me playing and screaming while I code, so I have many distractions. I'll go back now to fix that.