Figure out how it works!!!

Hi everybody, I got this puzzle yesterday in my inbox from one of my friends and I figured it out how it makes us fool... can you figure it out.. let's see if you can manage to find it out.. It says like: Someone needs to figure out how this works! Amazing. To my gifted friends. This stumped me. If you can figure out how she does it please let me know. I never even touched the cursor on my chosen number.. Once I did not even follow the directions, I just looked at the number and she still got it! This will drive you crazy!Click here to play with the puzzle