Mozilla Firefox 2 is a version of Firefox, a web browser released on October 24, 2006 by the Mozilla Corporation.Firefox 2 uses version 1.8 of the Gecko layout engine for displaying web pages. The release contained many new features not found in Firefox 1.5, including improved support for Scalable Vector Graphics (SVG) and JavaScript 1.7, as well as user interface changes.On March 22, 2006, the first alpha version of Firefox 2 (Bon Echo Alpha 1) was released.