Datasheet

You can see that Firefox 0.9 and Mozilla Suite 1.7 can be expected to behave identically where CSS and

design layout is concerned.

Because gecko browsers share the same brain (and because of Firefox’s popularity), for the remainder of

this book, I cite only Firefox when referring to a Gecko browser.

Depending on which Gecko browser you happen to like, you can obtain Gecko browsers from the fol-

lowing places:

❑ Mozilla Firefox for Windows, Mac, and Linux: Available from

http://www.mozilla.com/

firefox

❑ Netscape for Windows: Available from http://www.netscape.com/download

❑ Camino for Mac: Available from http://www.caminobrowser.org/

❑ SeaMonkey for Windows, Mac, and Linux: Available from http://www.mozilla.org/

projects/seamonkey/

Safari

The next browser that I discuss is Safari, which is based on Konqueror, an open source browser available

for Linux operating systems. The rendering engine used in the Safari and Konqueror web browsers is

called KHTML. While Konqueror and Safari both have KHTML in common, Safari is a fork of KHTML

(a fork means they shared the exact same source code at one point, but now each is developed indepen-

dently), and features found in Safari may not necessarily appear in Konqueror and vice versa. Despite

this, the two browsers render documents very similar to one another. Apple develops Safari, indepen-

dently of Konqueror, and is the browser included with Macintosh OS X operating systems. Before Safari,

Internet Explorer for Mac and Gecko had been dominant on the Mac.

For the purpose of this book, I note Safari compatibility when appropriate. Safari is available only for

Mac OS X and can be obtained from

www.apple.com/safari. Konqueror is only available for Linux

(and any operating system in which KDE, the K Desktop Environment, runs) at the time of this writing;

it can be found at

www.konqueror.org.

Opera

Opera is a lesser-known, Norwegian-based company. Opera users are fewer, accounting for only a few per-

cent market share by most statistical estimates. Again, that figure can be much higher or lower depending

on a website’s audience. Also be aware that Opera and Mozilla Firefox browsers can be configured to iden-

tify themselves to a website as Microsoft Internet Explorer browsers. This, of course, can distort statistical

analysis. This spoofing is done because websites often create content targeting Microsoft Internet Explorer

and Netscape specifically, leaving everyone else out in the cold —even though third-party browsers like

Mozilla Firefox and Opera probably support the required functionality.

At the time of this writing, the current version of the Opera browser is 9.0. You can download this

browser for free from

www.opera.com. The Opera browser is available for Windows, Macintosh, Linux,

and a variety of other platforms.

Chapter 1: Introducing Cascading Style Sheets

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