How to remove header script?

Hi,

I'm currently using zoomooz of janne.aukia.com/zoomooz/. However, I need to remove this line in the header

<script type="text/javascript" src="js/jquery.zoomooz.min.js"></script>

when viewport is less than 700px, and put it back if viewport is greater than 701px.

How do I go about this?

Thanks.