When I am working on a page, such as an email message, the page suddenly slides to the right and disappears. When I gesture to the left to get it back, it usually comes back for a second and then disappears again. I assume I'm making some inadvertent gestures with the Magic Mouse. What am I doing, and how can I get the page I was working on to come back and stay there? Is there any way to just get rid of that feature?