"Eyes follow mouse" in js

here is my interpretation of "eyes follow mouse" in javascript.
Nothing special but works fine.

an important function in this js is this one:

function objMove( obj, xPos, yPos ){
    obj.style.left = xPos + "px";
    obj.style.top =  yPos + "px";
}

is a function that move an object of the page.
the important thing is that works with ie, opera and firefox
an example of this eyes follow mouse at work.