Javascript - Track mouse position

Question

I am hoping to track the position of the mouse cursor, periodically every t mseconds. So essentially, when a page loads - this tracker should start and for (say) every 100 m

Answer 1

I don't have enough reputation to post a comment reply, but took TJ Crowder's excellent answer and fully defined the code on a 100ms timer. (He left some details to the imagination.)

Thanks OP for the question, and TJ for the answer! You're both a great help. Code is embedded below as a mirror of isbin.