To know more about the New Facebook Chat Bar visit here.
To toggle between Old Chat Style and New Chat Style, use the Options menu in the buddy list. To get Video Chat, just open a normal Chat Tab and then click the Video icon in the Title Bar of the conversation.
Note : We suggest that use the same browser for which you want to download the extension like to download extension for Google Chrome, use Google Chrome to download it for you.
To download extension for Google Chrome browser Click here.
To download extension for Opera brower Click here.
To download extension for Firefox browser Click here.