Time for action – creating tiles and adding Zoomify layer
With this example, the main goal is to manipulate images. Those images can lack geographic position, or overlay can't be possible or is not useful. In all cases, the image size has to be important as tiles' images are only useful in this use case.
Install Python 2.7 series, if you don't have it already installed, using the Getting Started from The Hitchhiker's Guide to Python! (http://docs.python-guide.org/en/latest/#getting-started or the instructions in the Installing the OpenLayers development environment section in Appendix B, More details on Closure Tools and Code Optimization Techniques).