
I got it working:
Just change your jqzoom.php file to this:
<script language="javascript" type="text/javascript"><!--
jQuery(document).ready(function($){
var options = {
zoomType: "standard",
zoomWidth: 200,
zoomHeight: 200,
xOffset: 10,
yOffset: 0,
position: "right",
lens: true,
imageOpacity: 0.2,
title: false,
showEffect: "show",
hideEffect: "hide",
fadeinSpeed: "fast",
fadeoutSpeed: "slow",
showPreload: true,
preloadText: "Loading zoom",
preloadPosition: "center"
};
$("#jqzoomMain").jqzoom(options);
$(".jqzoom, .jqzoomAdditional").click(function(){return false;});
$(".jqzoomAdditional").hover(function(){
var $jqzoomMain = $("#jqzoomMain");
var $jqzoomMainImg = $("#jqzoomMain").children('img:first');
var $thisImag = $(this).children('img:first');
var jqzoomMainHref = $jqzoomMain.attr('href');
var jqzoomMainImgSrc = $jqzoomMainImg.attr('src');
$jqzoomMain.attr('href', $(this).attr('href'));
$jqzoomMainImg.attr('src', $thisImag.attr('src'));
$(this).attr('href', jqzoomMainHref);
$thisImag.attr('src', jqzoomMainImgSrc);
return false;
}, function(){})
})
//--></script>