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Today Mozilla announced the launch of Firefox 22 for desktops and Android devices. For the desktop version, WebRTC, the open source browser-based communications API, is now enabled by default. "This technology makes it possible to place and receive video calls from a mobile or desktop browser or share live video, files and images with friends and family." Firefox 22 also has support for the asm.js subset of JavaScript, which allows for big performance boosts on graphically complex applications in the browser. (We saw a demonstration of this a while back.) Other new features include display scaling options for making text bigger on high-res displays, better WebGL rendering performance, word wrapping for text files displayed in the browser, and the ability to change the playback rate of HTML5 audio and video. The new Android version features include tablet UI support for smaller tablets, and a fix for scrolling in nested frames.