Some embodiments provide a user interface that includes a top page having an x-axis and a y-axis that extend at least partially along horizontal and vertical directions, and an imaginary z-axis that extends into the depth of the top page. The user interface of some embodiments includes a first subpage that is accessible from a top page and a second subpage, which is further in depth along the z-axis than the first subpage, that is accessible from the first subpage. The top page may change in appearance throughout the duration of time when at least the first subpage is shown to place focus away from the top page.