Mozilla has released Firefox 3.1 Alpha 2 the latest development version of the browser codenamed Shiretoko. The browser is based on Gecko 1.9.1 and has a better and faster JavaScript virtual machine.

The major development changes in the latest version include:

• Support for the HTML 5 <video> element.
• Initial support for web worker threads.
• You can now drag and drop tabs between browser windows.
• Ability to make use of Aero "Glass" in XUL.
• Support for CSS 2.1 properties: ::before and ::after, and white-space:pre-line.
• Support for CSS 3 properties: -moz-border-image, word-wrap: break-word, text-shadow, box-shadow and column-rule.
• Performance improvements and new preference values for color management profile support.

This version is not a fully released version and only a milestone build for the latest browser in the making, you should install it only if you know about development and testing.

Download Firefox 3.1 Alpha codenamed Shiretoko