[SOLVED] Bloody checkboxes...

[eluser]johnwbaxter[/eluser]
If someone could give me a hand i would be ever so grateful!

I have some checkboxes that get ticked, then that page is refreshed with updated values and the checkboxes are shown again with the ones that were selected still ticked.

What i want is that when the checkbox is unticked it stays unticked after refresh.

I'm saving the state of the checkbox in the session and so really i simply want to know how to detect that the checkbox is not ticked from the post data so that i can unset it from the session data.

I cant get it to do what i want, it is driving me mad!

Help!