By default, clicking the right mouse button anywhere within a web
page brings up a menu. This menu contains different items depending
on whether you clicked on a link, an image, or elsewhere within the
document. For instance, right clicking on an image allows you to
download it, open it in a new window, and so on. The middle button,
by default, displays a menu containing your bookmarks. This behavior
can be modified, as described in the section called Mouse in the chapter called Setting Galeon Preferences>.