I am not very fond of new facebook chat sidebar. Thats why i have searched for many how to tutorials to turn off that chatbar. Many users all over the world also complained about new sidebar chat. Everyone loves the old style of chatbar in facebook. Now facebook have launched a button to disable new chat sidebar. Now just click that button and enjoy old style of facebook chatbar.
I will show you where exactly you can find that facebook button to disable that facebook chat sidebar.
Please see highlighted area in yellow color Button and in your fb profile just click to hide the sidebar chat. If you are happy with new facebook sidebar chat then click again to show it on your sidebar.