Firebug is a handy tool for web developers to use as they browse the internet. Among the things that you can do with this program are debug, edit, and monitor CSS, JavaScript, and HTML in whatever page or pages you wish. Screen shots are available at http://getfirebug.com, and there is a forum in which you can ask questions at https://groups.google.com/forum/#!forum/firebug. To let the developers know about a bug, you can go to http://code.google.com/p/fbug/issues/list.
专门让网站开发者用来对网站进行编辑及纠错的工具