How to Display Facebook Chat Availability in Left Side rather than Right Side?

If you are seeing chat availability on the Right side, then at the bottom of the chat availability there will be a search box, next it it will be a button for options, next to options button there will be a button to hide the side bar, click on that and you will be having chat availability on the left side.

If you again wants this on Right side, then when you have chat availability on the left side, there will be a bar on the right side written Chat on it, click on that and you will be having chat availability on the Right side again.