At the top of productdetails.asx the following are the two sections that you need to uncomment. I have uncommented the sections so you should be able to cut and paste the zoom scripts below:
<%--Zoom Live Server--%>
<link rel="stylesheet" type="text/css" href="/css/jqzoom.css" />
<script type='text/javascript' src='/js/jquery-1.3.2.min.js'></script>
<script src="/js/jqzoom.pack.1.0.1.js" type="text/javascript"></script>
<%--Zoom Uncomment this section if you want to enable zoom--%>
<script type="text/javascript">
var jqzoomOptions = {
zoomWidth: 300,
zoomHeight: 300,
title: false
}
jQuery(function() {
jQuery(".jqzoom").unbind();
jQuery(".jqzoom").jqzoom(jqzoomOptions);
});
function SwapImage1() {
var setImage1 = document.getElementById("<%=hdPic1.ClientID%>").value;
document.getElementById("<%=Image1.ClientID%>").src = setImage1;
var setZoomImage1 = document.getElementById("<%=hdZoomPic1.ClientID%>").value;
document.getElementById("<%=myMainImage.ClientID%>").href = setZoomImage1;
//jQuery(".jqzoom").unbind();
//jQuery(".jqzoom").jqzoom(jqzoomOptions);
return false;
}