The first developer milestone of the next release of Firefox – code named Namoroka Alpha 1 – is now available for download. Namoroka is built on pre-release version of the Gecko 1.9.2 platform, which forms the core of rich internet applications such as Firefox. Please note that this release is intended for developers and testers only.
This Alpha of Namoroka / Gecko 1.9.2 introduces several new features:
Compositor (Phase 1), which moves Gecko to using one native widget per top-level content document. See this blog post or bug 374980 for more details.
A new focus model, described here and tracked in bug 178324
The chromedir attribute has been replaced with a pseudoclass
Several new CSS3 properties including background size and gradients for background images
Startup and responsiveness improvements throughout the application
Please use the following links to download Namoroka:
From : developer.mozilla.org