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6. Links and Webs > Mouse-Sensitive Images

Mouse-Sensitive Images

Normally, an image placed within an anchor simply becomes part of the anchor content. The browser may alter the image in some special way (usually with a special border) to alert the reader that it is a hyperlink, but users click the image in the same way they click a textual hyperlink.

The HTML and XHTML standards provide a feature that lets you embed many different links inside the same image. Clicking different areas of the image causes the browser to link to different target documents. Such mouse-sensitive images, known as image maps, open up a variety of creative linking styles.

There are two ways to create image maps, known as server-side and client-side image maps. The former, enabled by the ismap attribute for the <img> tag, requires access to a server and related image-map processing applications. The latter is created with the usemap attribute for the <img> tag, along with corresponding <map> and <area> tags.


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