This is really simple, though I admit I didn’t get this the first time. This cool magic circles appearing on your page is just one of the many secret tricks you’ll find in Facebook. You might want to give this a try.

Here’s how:
Press Up, Up, Down, Down, Left, Right, Left, Right, B, A, Enter key then press up & down.

Now, just in case it doesn’t work on your first try, try reloading your page again by pressing F5 and repeat the process.