(If you intend on using these in a high-lag area, you may want to consider the fading frames instead, located here: https://marketplace.secondlife.com/p/Dark-Lord-Designs-Fading-Frame/1031442 )
The animated gif simply doesn't do this frame justice. The zooming border is smooth as I could manage without causing lag, with a 10 second hold time to display the image, and a 3 second hold time while the picture is blacked out.
Simply edit the frame and drop textures or pictures into the contents tab and the border will begin zooming between one another.
Note:
If only one picture is in the frame, it will remain solid on that picture.
If no pictures are in the frame, it will revert to the Dark Lord Designs logo.
If it's not cycling between images, be sure the script is inside it, and also make sure you're dropping the images inside the contents tab, not just dragging the textures onto the frame itself.