If you're on Firefox, try FB Chat Sidebar Disabler addon or GreaseMonkey + userscript known as Facebook Sidebar Chat Reversion. If you're on Chrome, FB Chat Sidebar Disabler.
Its simple no matter if you have Firefox or Chrome. You need install one script its avaliable in UserScript. Then you can use Facebook old chat window again. Read more - http://www.pc-tricks-tips.com/2011/07/how-to-get-facebook-old-chat-window.html
I think the new facebook chat model is not bad, although the conversation does not exist but we can still send a message through the inbox.
but it's complicated, i prefer the old. if someone could report if the Chat application on facebook now so complicated?
Simple download the addon for your browser. then you can see your old chat back. Here is the full tutorial. freshtutorial.com/get-old-facebook-chat-back/
i agree, sometimes I need recent people who had chat with me, (for fast access) but sometimes i agree with this opinion:
The new Facebook chat is really bad in my opinion. I liked the old one simply for the fact is was very small, and did not take up 30% of the screen. I think the old one was more elegant, and looked like an updated version compared to the new one.
I liked the previous chat better, mainly because it worked better. I was able to put recently added friends on limited profiles easy from there. I have no idea how to do it from the chat section. Haha look at me being lazy. But yeah, going to try this add-on for chrome to change it back.
Why would you want to get it back anyway? It's not like your friends are going to do the same, so I'd recommend that you keep it the way that it is.
The best way to get old face book chat is that the users of face book should write to the face book administration to bring back the old FB chat feature back. Every FB user should do it. And the more messages the admin will receive the more it will favor the issue.