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Essential JavaScript™ for Web Professionals, Second Edition by Dan Barrett

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Recap

You will find that image rollovers are by far the most commonly used JavaScript implemented on Web sites today. Almost every site you go to these days makes use of them in one way or another, so a good knowledge of how they work and what their limitations are can be a great asset to a programmer. Once you have the basics down, use that knowledge to experiment with different rollover techniques. You will be surprised at some of the creative and exciting rollovers you can devise.

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