I have built a home page with a PopUp window. To stop the window being annoying, i have found a cookie so the box only shows once per user session.

What i would really like instead, is a tick box in the popup window to say something like "Do Not Remind Me Again". If the user ticks this box, the window should close and they will never see the window again.

Does anyone know of such a cookie. I have searched everywhere, but cannot find anything like. Unfortunately, my JavaScript knowledge does not extend to writing cookies, only modifying them.