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Chapter 24. Introduction to Dynamic HTML > Web Page Layout and Content Position...

Web Page Layout and Content Positioning

Because of their support for the W3C's CSS standard, most similarities between Netscape's and Microsoft's Dynamic HTML technologies occur with the elements that make use of style and style sheets. The main use of style sheets, discussed extensively in Chapter 9, "Style Sheets," is in the specification of formatting information for HTML elements. The benefit of using style sheets for this purpose is the capability of the Web page designer to separate the content of the document from its formatting information. (This makes it much easier to change the format while keeping the information the same.)

Another use of style sheet attributes is to perform positioning of HTML elements through the CSS positioning attributes. Both Microsoft and Netscape support these attributes in their Web browsers—although, as a relatively new standard, neither Web browser offers perfect support for them. This section focuses on how you can use style sheet attributes to specify positioning of HTML elements within a Web page. You will also see how to do this for Netscape Navigator 4 by using Netscape's <ilayer> and <ilayer> elements. Finally, you can learn how to create scripts that can dynamically change the positioning information and how to achieve a measure of cross-platform compatibility between the two flavors of Dynamic HTML.


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