Device, method, and graphical user interface for reordering the front-to-back positions of objects

At a multifunction device with a display and a touch-sensitive surface, a plurality of objects are displayed on the display. The plurality of objects has a first layer order. A first contact is detected at a location on the touch-sensitive surface that corresponds to a location of a respective object of the plurality of objects. While detecting the first contact, a gesture that includes a second contact is detected on the touch-sensitive surface. In response to detecting the gesture, the plurality of objects is reordered in accordance with the gesture to create a second layer order that is different from the first layer order. In some embodiments, the position of the respective object within the first order is different from the position of the respective object within the second order.