There is JavaScript running in this webpage which shows a fake cursor: the hand with the pointing finger. This JavaScript code tracks all mouse movements so that the fake cursor moves along as you move the mouse. There is a semi-transparent link to the left of the bug YES and NO buttons that you should just be able to see.
The JavaScript code used here for tracking the mouse movements is not very good: the fake cursor does not move smoothly and often jerks around. But this can be improved using better JavaScript code, as illustrated by the session-replay scripts discussed on blog post on session replays that were shown in the lecture of week 5.
