Patent attributes
At a portable multifunction device with a touch screen display: displaying a portion of an electronic document; displaying a first vertical bar on top of the displayed portion of the electronic document; detecting a movement of an object on the displayed portion of the electronic document; in response to the detecting: (a) scrolling the electronic document in the direction of movement, (b) replacing the first vertical bar with a second vertical bar, (c) moving the second vertical bar to a new vertical position such that the new vertical position corresponds to the vertical position in the electronic document of the displayed new portion of the electronic document; and in response to a predetermined condition being met, replacing the second vertical bar with the first vertical bar, wherein an opacity of the first vertical bar is less than an opacity of the second vertical bar.