http://www.mozilla.com/en-US/firefox/beta/http://releases.mozilla.org/pub/mozilla.org/firefox/releases/4.0b2/win32/en-US/Firefox%20Setup%204.0%20Beta%202.exehttp://www.mozilla.com/en-US/firefox/beta/http://releases.mozilla.org/pub/mozilla.org/firefox/releases/4.0b3/win32/en-US/Firefox%20Setup%204.0%20Beta%203.exehttp://www.mozilla.com/en-US/firefox/beta/http://releases.mozilla.org/pub/mozilla.org/firefox/releases/4.0b5/win32/de/Firefox%20Setup%204.0%20Beta%205.exehttp://www.mozilla-europe.org/de/firefox/3.6.9/releasenotes/ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/3.6.9/win32/de/Firefox%20Setup%203.6.9.exehttp://www.mozilla-europe.org/de/firefox/3.6.10/releasenotes/ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/3.6.10/win32/de/Firefox%20Setup%203.6.10.exehttp://www.mozilla.com/en-US/firefox/3.5.13/releasenotes/http://www.mozilla.com/en-US/firefox/all-older.htmlhttp://www.mozilla-europe.org/de/firefox/3.6.11/releasenotes/ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/3.6.11/win32/de/Firefox%20Setup%203.6.11.exehttp://www.mozilla.com/en-US/firefox/3.5.14/releasenotes/http://www.mozilla.com/en-US/firefox/all-older.htmlhttp://www.mozilla-europe.org/de/firefox/3.6.12/releasenotes/ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/3.6.12/win32/de/Firefox%20Setup%203.6.12.exehttp://www.mozilla.com/en-US/firefox/3.5.15/releasenotes/http://www.mozilla.com/en-US/firefox/all-older.htmlNew In Firefox 4.0:
* Tabs are now on top by default on Windows only - OSX and Linux will be changing when the theme has been modified to support the change.
* On Windows Vista and Windows 7 the menu bar has been replaced with the Firefox button.
* You can search for and switch to already open tabs in the Smart Location Bar
* New Addons Manager and extension management API (UI will be changed before final release)
* Significant API improvements are available for JS-ctypes, a foreign function interface for extensions.
* The stop and reload buttons have been merged into a single button on Windows, Mac and Linux.
* The Bookmarks Toolbar has been replaced with a Bookmarks Button by default (you can switch it back if you'd like).
* Crash protection for Windows, Linux, and Mac when there is a crash in the Adobe Flash, Apple Quicktime or Microsoft Silverlight plugins.
* CSS Transitions are partially supported.
* Full WebGL support is included but disabled by default at this time.
* Core Animation rendering model for plugins on Mac OS X. Plugins which also support this rendering model can now draw faster and more efficiently.
* Native support for the HD HTML5 WebM video format.
* An experimental Direct2D rendering backend is available on Windows, turned off by default.
* Web developers can use Websockets for a low complexity, low latency, bidirectional communications API.
* Web developers can update the URL field without reloading the page using HTML History APIs.
* More responsive page rendering using lazy frame construction.
* Link history lookup is done asynchronously to provide better responsiveness during pageload.
* CSS :visited selectors have been changed to block websites from being able to check a user's browsing history.
* New HTML5 parser.
* Support for more HTML5 form controls.
http://releases.mozilla.org/pub/mozilla.org/firefox/releases/4.0/win32/en-US/Firefox%20Setup%204.0.exehttp://www.mozilla.com/en-US/firefox/3.6.15/releasenotes/http://ftp.osuosl.org/pub/mozilla.org/firefox/releases/3.6.15/win32/en-US/Firefox%20Setup%203.6.15.exehttp://www.mozilla.com/en-US/firefox/3.5.17/releasenotes/http://www.mozilla.com/en-US/firefox/all-older.html"http://www.mozilla.com/en-US/firefox/3.5.17/releasenotes/"][B]Release notes[/B]http://www.mozilla.com/en-US/firefox/all-older.html"]Download Seitehttp://www.mozilla.com/en-US/firefox/3.6.16/releasenotes/"ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/3.6.16/"http://www.mozilla.com/en-US/firefox/3.6.17/releasenotes/"ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/3.6.17/"http://www.mozilla.com/en-US/firefox/4.0.1/releasenotes/ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/4.0.1/"ftp://ftp.mozilla.org/pub/firefox/releases/5.0b3/win32/de/Firefox%20Setup%205.0b3.exeftp://ftp.mozilla.org/pub/firefox/releases/5.0b5/win32/de/Firefox%20Setup%205.0b5.exehttps://www.mozilla.com/en-US/firefox/5.0beta/releasenotes/ftp://ftp.mozilla.org/pub/firefox/releases/5.0b7/win32/de/Firefox%20Setup%205.0b7.exehttps://www.mozilla.com/en-US/firefox/5.0/releasenotes/ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/5.0/win32/de/Firefox%20Setup%205.0.exehttp://www.mozilla.com/en-US/firefox/3.6.18/releasenotes/"ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/3.6.18/"