Designing: Consider Informational Flags
In many cases, you don't need to click on a link to learn something. Simply moving your mouse over some links and images can cause an informational flag to appear. This can help your readers decide whether they want to click on a particular link—in effect, giving them a preview of what they might find if they did click on it. Even better, it is relatively easy to create informational flags. In a word processor, such as Microsoft Word, you can create flags when you create or edit links. In a Web editor, such as Dreamweaver, you can add flags to images or links with a "title."
Related Page: Learn more about Web design on the Web Style and Design Guidelines links page.