Site: www.downtownsailing.org

How do I insert a graphic "Donate" button in the header under the log-in info? When the header was changed recently by a new admin, that button disappeared. It's been several years since I have worked on this particular site & I have not been able to figure out how to get the button back in the header. It is the same button that appears at the bottom of the left-hand navigation. Any help would be greatly appreciated!