After much delay, Mozilla has released the seventh beta for Firefox 4.0 on November 10th. This is a regular beta release and is being made available for testing purposes only. New stuff in this Beta 7 release: Uses JägerMonkey, a new, faster JavaScript engine WebGL is enabled by default on Windows and Mac OS X. WebGL support requires an OpenGL-capable graphics card. Support for other graphics cards on Windows (specifically Intel GPUs) and Linux will be coming in a future beta Certain rendering operations are now hardware-accelerated using Direct3D 9 on Windows XP, Direct3D 10 on Windows Vista and 7,…