slide in plugin staying on page after its closed so it can be reopened

Can I make the slide in stay on the page after it slides in and is closed? The reason is so that is someone later decides to reopen the slidin, they can. So if a user closes it and it retreats to a corner of the page or on the side of the screen, a user can decided to click on it an it opens.
If the slidein plugin doesn't do this, what do I have to do to customize this functionality?