Uncaught TypeError?

I have this before the closing body tag:
<script type="text/javascript" src="dollarB.js"></script>
<script type="text/javascript" src="main.js"></script>

and this in the main.js file:
console.log("Mouse Y"+$B.mouseY());
console.log("Mouse X"+$B.mouseX());

Can someone help?

Thanks for your time :)

You can only get the mouse position when an event is triggered. As you haven't triggered an event in that code there is no event to get the mouse position of.

For example:

window.onmousemove = function(evt) {
console.log("Mouse Y"+$B.mouseY(evt));
console.log("Mouse X"+$B.mouseX(evt));
}

Ohhh I can't believe I didn't notice that! :\ Thanks for the quick reply! :)