Slicing artwork for Web pages
You'll create slices in the Web design to define its different Web elements. Slicing a design into small pieces lets you designate areas in an image as different file formats for different Web elements (such as GIF for a logo and JPEG for a gradient), to make the Web page load more quickly and to assign special behaviors, such as links to sections of a page.
When you save the artwork as a Web page, you can save each slice as an independent file with its own format, settings, and color palette. Using these slices, Illustrator creates an HTML table or cascading style sheet to contain and align the slices. (If you want, you can generate an HTML file that contains the sliced image along with the table of cascading style ...
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