Pages that have very large images tend to take a lot of time to load. A common trick to speedup loading of pages with large images is to split the images in many pieces so the browser can load them separately at the same time.
This class make image splitting possible without the need to explicitly divide the images in different files.
It generates the necessary HTML for making the picture appear in the right place of the page and the class it self extracts each piece to be served according to parameters passed in the URL of the image slices.