An incorrectly designed interface can ruin any Internet project. But in order to develop a perfect user interface, you need to be a specialist in various fields of knowledge: from graphics and design to cognitive psychology and pattern recognition theory. How can a designer use the knowledge of these disciplines in his work? Jeff Johnson, best-selling author of "GUI Bloopers" and "Web Design: Typical Bloopers and How to Avoid Them," provides designers with a unique opportunity to harness the power of CGI and pattern recognition theory to develop perfect user interfaces. The book is needed by designers, UI developers and web developers.