This document tries to give some insights into the low-level features for image handling. This includes the functionality of these classes:
Generally there are two common ways to show images in a browser: normal image elements and background images. The Decoration class supports both of them and automatically selects the type to use for a specific requirement. The Background class is a simple wrapper around the support for background images. It is mainly some cross-browser magic to fix a few quirks of some of the supported engines.