Working with Sliced Images
A common technique when designing images for the Web is to take a larger composition and slice it into several smaller images. Perhaps you want to animate just a portion of an illustration with an animated GIF, or you've created a navigation bar with elements that change on a regular basis. Designers were forced to create the image in Photoshop, then manually split up the pieces and place them onto a Web page. ImageReady and other applications put an end to that in the last few years. These programs have included methods of automatically slicing images into regular pieces, and building an HTML structure (typically using tables) which holds the pieces together.