slicer = new JSlicer(document.getElementById('map'), 'myImage.png'); slicer.init();
Allows you to view an image as a Google Map without have to do any pre-tiling or server-side work. Its quick and simple to implement.
This is not production ready and really should be only used as a code sample. However is does work.
Eventually when Web Workers get better support for Canvas, we will use them to improve performance.
Also on some mobile device won't load images over a certain size. The iPhone is limited to width * height ≤ 3 * 1024 * 1024
See it in the wild: http://gvgmaps.com/