Detect Brower Javascript Version

The following Javascript will show which version of Javacript the browser supports.
http://javascript.about.com/library/bljver.htm

Surprisingly, IE8 on Windows 7 only supports up to version 1.3. No wonder some Javascripts which work on Firefox (up to 1.8), Safari and Chrome (up to 1.7) do not work on IE8.

Running Firefox 2 and Firefox 3 in the same machine

When doing website development, sometimes we need to see the page behaviour on both Firefox 2 and Firefox 3 for backward compatibility.

Refer to the following articles on how to setup both Firefox 2 and 3 running on the same machine.

http://blog.andreloker.de/post/2008/06/Firefox-2-and-3-side-by-side.aspx
http://www.command-tab.com/2008/06/18/how-to-run-firefox-2-and-3-simultaneously/

Firefox extension

Windows Resizer
https://addons.mozilla.org/en-US/firefox/addon/1985

Firebug
https://addons.mozilla.org/en-US/firefox/addon/1843

WebIDE
http://www.ithome.com.tw/news/88890

HttpFox: An HTTP analyzer addon for Firefox
https://addons.mozilla.org/en-US/firefox/addon/6647

CSSViewer
https://addons.mozilla.org/en-US/firefox/addon/2104

Web Developer
https://addons.mozilla.org/en-US/firefox/addon/60

NoScript
https://addons.mozilla.org/en-US/firefox/addon/722

ScribeFire Blog + HTML Editor
https://addons.mozilla.org/en-US/firefox/addon/1730

FireShot
http://screenshot-program.com/fireshot/

Project Naptha 讓圖片裡的文字可被複製、選取（Chrome 擴充功能）
http://free.com.tw/project-naptha/