So, I noticed that the Shomei Tomatsu pachyderm by SFMOMA opens with a phone dial screen, and that both the thumbnails and the central rollover image resolve into circles, which looks nice. On other phone dials, only the thumbnails resolve into circular shapes. Does anyone know how this was done for the central rollover image? I was assuming that maybe using a gif, instead of a jpg, that is cropped to a circle except for transparent pixels in the background, might work. Or is this some flash magic that I don't know about? Any help appreciated.

Thanks!
Catherine O'Neill
Arthouse at the Jones Center