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Chapter 24. Introduction to Dynamic HTML > Web Browser Object Model

Web Browser Object Model

The Document Object Model used by Netscape Navigator and Microsoft Internet Explorer lies at the heart of their implementations of Dynamic HTML. Netscape's implementation, and its extensions to the object model, are not as extensive as Microsoft's. Still, a number of important extensions enable you to increase capability in your HTML documents.

Microsoft's new object model, on the other hand, is a much more significant extension of the object models of the past for either browser. In the past, you were limited mainly to accessing and manipulating the Web browser windows and only a few aspects of the current document, such as the hypertext links, HTML Forms, and images. Now, Microsoft's Dynamic HTML has extended the object model to every HTML tag. It is now possible to examine or set properties for any tag within an HTML document or to set up events that are attached anywhere. Microsoft's Dynamic HTML documentation Web site includes some good examples of this, enabling you to dynamically change the content included in an outline, expanding or compressing it in response to user input.


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