1343Chapter 52 (Web hosting) .Application: Outline-Style Table of Contents onMouseOut= status= ;return

1343Chapter 52 .Application: Outline-Style Table of Contents onMouseOut= status= ;return true >  Fresh

The CSS version (for the identical outline content) is a slightly smaller file size than the older, compatible one, but not so big a difference as to influence your choice. Browser compatibility should be your number one criterion. Ease of modifi cation for changing content and improved user experience for browsers following the CSS branch are tied in second. A Futuristic (XML) Outline As XML and its associated technologies head toward a solid standardized foot ing, the latest browsers available as this edition is being written provide mixed sup port for some of the key features of an ideal environment. As those issues are sorting themselves out, getting to know portions of XML through the IE5+/Windows XML data island features is possible. While it s not normally okay to embed XML in an HTML document (that is, the two designations specify unique document types), IE5+/Windows provides an tag, in which you can insert XML tags. Scripts can access the elements inside the XML data island, referencing those elements as child nodes of the XML element. See Chapter 33 for the reference material on the IE XML element. Birth of an XML specification Collapsible outlines provide convenient ways to organize hierarchical informa tion all around us. You d be hard-pressed to find a more active proponent of the outline than Dave Winer, CEO of UserLand Software, Inc. (http://www.userland.com). Dave is a veteran software developer, as well as author and outspoken Web publisher. His www.scripting.comWeb site is a popu lar destination if you want to find out the latest Internet and computing technology buzz. As an outgrowth of development for his company s Web tools, Dave looked to the XML structure to assist in representing outline content in a shareable, easily parseable format. The result is a specification called Outline Processor Markup Language, or OPML for short. You can read all about the formal specification at http://www.opml.org/spec. Like virtually all XML, OPML is intended to be
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