Clicking on the above graphic will bring you back to the Tribulation Central Index of Printable Articles Page. The same will happen when you click on the bar on the bottom of the page:
If you reach any of the printable articles through the corresponding "Print this article" link, then the article appeared through a new window. Therefore, all you need to do is close the window if you are through printing. If not, you can click on the above two images to get to the Index of Printable Articles Page.