
What's new:
- Windows: Firefox is now easier to update with one less prompt (User Account Control)
- Page Source now has line numbers
- Line breaks are now supported in the title attribute
- Improvements to "Find in Page" to center search result
- URLs pasted into the download manager window are now automatically downloaded
- The column-fill CSS property has been implemented
- Support for the text-align-last CSS property has been added
- Experimental support for ECMAScript 6 Map and Set objects has been implemented
- Fixed where WebGL performance may be degraded on some OS X hardware
Download Firefox 12
Firefox 12 will be the last Firefox version to officially support Windows XP RTM, XP SP1 and Windows 2000.