Does anyone know how to add a show/hide button in HTML.

I have a banner near the top of my page and I want it to be possible for people to hide it, and so the computer remembers you have hidden it and not show it again.

If this is possible plz help,
cheers

It's not possible with pure HTML.

You'll either need Javascript or a server-side programming language to do it.

I would use a javascript function to toggle the CSS display property. Something like what is described in this tutorial. http://www.harrymaugans.com/2007/03/...cript-and-css/

You would need to set and read in a cookie to retain preferences between sessions.

Use CSS properties: display and hidden, depends on what is the task.
You can achieve it using JavaScript or Server application like PHP.
And read how coockies work it should help 100%.

Good luck