BEST WAYS TO DISABLE SEEN OPTION IN FACEBOOK CHAT

best way to disable seen option in facebook chat:

Facebook recently update new facility SEEN option in chat box.When you are chating with someone on Facebook, and the person read your message, it displays ‘seen’ along with the time when message was read.actually this is a best feature but some times it is problem to it allows your friend to know that you r ignoring him/her...
follow the given steps to disable seen button:
FOR GOOGLE CHROME:

STEP1:CLICK HERE TO DOWNLOAD https://chrome.google.com/webstore/detail/fb-unseen/ihcedcpmfdpjijiamkaeaefgfagnnpei?hl=en
STEP2: As soon as you click above link you will get screen alert showing FB UNSEEN then just click ADD TO CHROME option STEP3:when you add this to chrome it get enabled and you can enjoy this feature.
FOR MOZILLA FIREFOX:

STEP1: Open your FIREFOX Browser and click CTRL+SHIFT+F
STEP2: As soon as you click above code then yu will find screen capture like below Then click on CUSTOM FILTERS.
STEP3: then you can find an another option Add Filter GROUP

Group. STEP4: When you click 2.Add filter group you can find New filter Group having an option Actions.
STEP4:Click on 3.Actions then you can see Shoe/Hide filters.
STEP5: Again click on Show/Hide filters Then add below code in right side just like in picture below - /ajax/mercury/change_read_status.php$domain=facebook.com