How to add facebook chat side bar to mosila firefox browser

hello friends normally we use to surf on internet on  multiple tabs. It will be inconvenient to us to chat in facebook while browsing on other sites because each time we want to open facebook tab and chat there. but if we add facebook chat side bar to the browser we can chat from any tab as the side bar will wont change though we came out of facebook tab. You can see image bellow to know how it looks

Follow the steps bellow

1. Open mosila firefox browser and press alt key 

2. Select bookmarks and select "show all bookmarks "

3. A box will open from that select unsorted bookmarks > organise >  new bookmark

 4. Again a box will open in that type " facebookchat " in first boxand type "  http://www.facebook.com/presence/popout.php " in second box . click on load this bookmark >add

5. Now again press alt key > view > side bar > bookmarks>

6. now select facebook chat from the bookmarks in slide bar...that's it..done

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