You can apply any available behavior to an image or image hotspot. When you apply a behavior to a hotspot, Dreamweaver inserts the HTML source code into the area tag. Three behaviors apply specifically to images: Preload Images, Swap Image, and Swap Image Restore.

Preload Images

Loads images that do not appear on the page right away (such as those that will be swapped in with behaviors, AP elements, or JavaScript) into the browser cache. This prevents delays caused by downloading when it is time for the images to appear.

Swap Image

Swaps one image for another by changing the SRC attribute of the img tag. Use this action to create button rollovers and other image effects (including swapping more than one image at a time).

Swap Image Restore

Restores the last set of swapped images to their previous source files. This action is automatically added whenever you attach the Swap Image action to an object by default; you should never need to select it manually.

You can also use behaviors to create more sophisticated navigation systems, such as a navigation bar or a jump menu.