Thursday 18th of December 2014 03:23:26 PM

Book Home

Cascading Style Sheets: The Definitive GuideSearch this book

Symbols | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Index: U

U element: 4.1.6. Text Decoration
UA (see user agent)
underlining: 4.1.6. Text Decoration
changing color of: 4.1.6.1. Weird decorations
removing from hyperlinks: 4.1.6. Text Decoration
turned off by browsers: 4.1.6.1. Weird decorations
Uniform Resource Identifier (URI): 3.5. CSS2 Units
Uniform Resource Locators (see URLs)
units: 11.1.3. Case 3: Putting a Magazine Article Online
(see also length units; CSS2 units)
for aural style sheets: 3.5. CSS2 Units
avoiding mixing: 11.1.3. Case 3: Putting a Magazine Article Online
color: 3.6. Summary
universal selector: 10.2.1.1. Universal selector
unordered lists: 7.7.1. Types of Lists
unvisited anchors: 2.4.1. Pseudo-Class Selectors
uppercase text: 4.1.5. Text Transformation
upright text: 5.4.1. Fonts with Style
URI (Uniform Resource Identifier): 3.5. CSS2 Units
URLs (Uniform Resource Locators): 3.4. URLs
HREF attribute and: 1.4.1.1. LINK attributes
referring to in style sheets: 3.4. URLs
specifying for images: 6.2.1. Background Images
user agent (UA): 2.2.2. Grouping Declarations
2.2.2. Grouping Declarations
(see also browsers)
users, selecting alternate style sheets: 1.4.1.2. Alternate style sheets


Symbols | A | B | C | D | E | F | G | H | I | J | K | L | M | N

XML documents are also quite naturally retrieved from a persistence layer (databases, file systems, XML stores). This lends XML to be used in real world applications where the information being used by different parts of a system is the most important thing.

XML is platform independent, textual information

Information in an XML document is stored in plain-text. This might seem like a restriction if were thinking of embedding binary information in an XML document. There are several advantages to keeping things plain text. First, it is easy to write parsers and all other XML enabling technology on different platforms. Second, it makes everything very interoperable by staying with the lowest common denominator approach. This is the whole reason the web is so successful despite all its flaws. By accepting and sending information in plain text format, programs running on disparate platforms can communicate with each other. This also makes it easy to integrate new programs on top of older ones (without rewriting the old programs), by simply making the interface between the new and old program use XML.

For example, if you have an address book document stored in an XML file, created on a Mac, that you would like to share with someone who has a PC, you can simply email them the plain text address book XML document. This cant be done with binary encoded information which is totally platform (and program) dependent.

| O | P | Q | R | S | T | U | V | W | X | Y | Z


Library Navigation Links

Copyright © 2002 O'Reilly & Associates, Inc. All Rights Reserved.

sophisticated as to have both an italic face and an oblique face, andeven fewer web browsers are sophisticated enough to tell thedifference when both faces do exist.

Figure 5-26

Figure 5-26. More font styles

If either of these is the case, a few things can happen. If there isno Italic face, but there is an Oblique face, then the latter can beused for the former. If the situation is reversed -- an Italicface exists, but there is no defined Oblique face -- the useragent may not substitute the former for the latter, according to theblind copies. Navigator handles any one of these options; Explorer can handle all three. Here's a link to my e-mail:  so you can complain about this page.  The link encloses both the image (with default border) and the blue underlined text.  Note that I specified the text for the subject line (the sender can change this). I could also specify ?cc= or ?bcc= and list e-mails to receive copies or blind copies. Navigator handles any one of these options; Explorer can handle all three.

7.4.3. Border Colors

Comparedto the other aspects of borders, setting the color is pretty easy. InCSS1, there is the single property border-color,which can accept up to four color values at one time.

If there are less than four values,