Login Multiple facebook accounts in same browser

login multiple fb accounts in same browser:

For firefox:
Right click on firefox shortcut,go to properties
now at the end of target,add 
-profilemanager -no-remote
Example: "c:\program files\Mozilla Firefox\Firefox.exe" -pofilemanager -no-remote

2nd method:install an addon multi-fox addon
It wl work fine

For chrome:
Press ctrl+shift+n
This wl launch incognito browser,where u can login to another fb account

Enjoy