Get your facebook chat box back into the old style (better)

For Mozilla Firefox:

First, download and install the firefox add-on Greasemonkey.
Download it here: https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/

Second, go here and click Install that you can see on the upper right side of the page.
(Restart the browser first if second step fails to show installation box and repeat this step)

And lastly, restart the browser.

For other browsers, just skip the first step mentioned above because that is just exclusively for firefox browsers only.

Hope this helped you, enjoy and thanks for the script writer of the facebook sidebar chat reversion. :)

Note: This trick doesn't actually get your fb chatbox to its old script with its functionality but just changes its style to make it look better where you can see the online friends on chat.