s, such as lines, rectangles, and ovals.FIGS. 147 and 148 illustrate how subpixel optimization can be applied to rollover images and GIFF animations, respectively.In the subpixel optimization routine 14700 shown in FIG. 147, both a non-rollover image 14702, which is to be displayed when a pointing device is not detectably over the portion of the screen associated with the images, and a rollover im