I need an div (for advertisement) that slides down like here (when loading the page): <http://www.webintenta.com/Files/JQueryCollapse.html>

Tricky part: When I click on the [x] the whole div should disappear. I want it to disappear for the Browser Session or better for the IP that accessed it. Saving it to a Cookie would also be a solution.

How can I do that?
Thanks