And then comes CSS2, with its positioning and advanced layout, which although only partially implemented is supported to a huge degree. Beyond HTML and CSS, Gecko also supports XML 1.0, and can display XML documents with CSS style sheets attached to them. It supports the W3C Document Object Model for Level 0, Level 1, as well as part of the still unpublished draft for Level 2. This means you have total control of HTML, XML and CSS through client-side methods like JavaScript. Gecko has made many improvements to JavaScript and supports the ECMA-262 standard for JavaScript.
Gecko can do a lot of stuff, and it does it the Right Way too.
And it's faster than its predecessor. And it fits on a single floppy. And it's an embeddable software component. And it's only part of Mozilla. Well, I should .