firebug debug breakpoint js minified

1. Unminify js
http://his-server/javascript/one-line.js
Save to: D:\www\javascript\one-line.js
Convert to: D:\www\javascript\multiple-lines.js
Delete one-line.js. Rename multiple-lines to one-line.js
Setup web server: http://127.0.0.1/  map to directory D:\www\javascript

2. Edit file hosts
his-server 127.0.0.1

3. Now you can set break point to debug with Firebug.