This invention provides a user interface that aligns an object corresponding to an image or a text on an object corresponding to a page of an electronic album and displays the object in a list so that the user can easily, visually, and correctly recognize change of alignment of the objects when editing a layout of the objects. In an information processing apparatus of the present invention, a plurality of pages and reduced images corresponding thereto are orderly displayed in a list in a window. When first one of the reduced images is dragged and overlaps with second one of the reduced images, the second reduced image is shifted from an original alignment position and displayed in the window. When the first reduced image is dropped at an original alignment position of the second reduced image, an order of each page is changed.