The examples of Chapter 5 require the Mozilla Suite or Mozilla Firefox web browsers, you can obtain either of these from
http://www.mozilla.org . The book has the Mozilla suite depicted, but Firefox works fine. In the Chapter 5 exercises at the end of the chapter you'll rewrite the examples so that they work in IE 6.
IE 6 does not support many of the advanced selectors used in that chapter (nor many other advanced CSS features). Although the latest beta of IE7 does support more. Regardless, you'll need several browsers to get through the book. Whichever one is shown in the screen shot pictured in the book is the best to go with for that particular example.
HTH!
Regards,
Rich
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http://www.smilingsouls.net]
Mail_IMAP: A PHP/C-Client/PEAR solution for webmail
Author: Beginning CSS: Cascading Style Sheets For Web Design