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Information Architecture on the World Wide Web phần 4

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Ngoài ra, quá trình khám phá các đề án tổ chức theo định hướng có thể ẩn dụ có thể tạo ra những ý tưởng mới và thú vị về tổ chức, thiết kế, và chức năng của trang web (xem "Thăm dò phép ẩn dụ" trong Chương 8). | Information Architecture for the World Wide Web A slightly more complex global navigation system may provide for area-specific links on third level pages and below. For example if a user explores the products area of the web site the navigation bar could include Main Page Products and Search. The obvious exception to this rule-based system is that pages should not include navigation links to themselves. For example the main page of the products area should not include a Products link. However this is a great opportunity for the site s graphic designer to devise the navigation bar to show that you are currently on the main page of the products area. Designers often leverage a folder tab or button metaphor to accomplish this effect. On the Argus web site we use the @ sign from our corporate logo as seen in Figure 4.7. Figure 4.7. For the Argus web site graphic designers from Q LTD came up with a creative and elegant solution to show context within the navigation system by leveraging the @ sign from our corporate logo. In this example the @ sign indicates that the Publications page is within the What We Do area. As you can see this type of rule-based global navigation system can easily be applied throughout the entire web site. The navigation system and the graphic design system should be integrated to provide both flexibility and context. Note that the relative locations of the options should remain the same from one version of the bar to another and that since people read from left to right Main Page should be to the left of the other options. Both these factors enhance the context within the hierarchy. page 48 Information Architecture for the World Wide Web 4.4.3 Local Navigation Systems For a more complex web site it may be necessary to complement the global navigation system with one or more local navigation systems. To understand the need for local navigation systems it is necessary to understand the concept of a sub-site.5 The term sub-site was coined by Jakob