Amazing flashlight effect from My Father's Long Long Legs won't work in Harlowe

My Father's Long Long Legs has this cool effect where the text and background are black and then a flashlight illuminates the text and an image. The author shares the code here: http://www.mantlelabs.com/flashlight/#.V0dRpZErLIX

I"m a newbie so I just cut and pasted it to the passage I want to apply it to.

How do I get it to work in Harlowe?

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script>
$(document).light(function() {
$("body").mousemove(function(e){
$("body").css('background-position',(e.pageX - 250)+'px '+(e.pageY - 250)+'px');
});
});
</script>