请问怎么下载到firefox20以前的版本2014-04-03 01:02HHMILY送的注册码2014-04-03 01:02现在关闭个标签都要等半天1198612012014-04-03 01:18http://ftp.mozilla.org/pub/mozilla.org//firefox/releases/HHMILY送的注册码2014-04-03 01:30谢谢ls,新人没js,请见谅