Usage:
1.
<a href="[fullsize image]" class="zoom">
<img src="[thumbnail]" />
</a>
2.
$(document).ready(function() {
$('.zoom').zoomify({
'width':500, //optional, default is 500px
'height':500, //optional, default is 500px
'opacity':0.3 //optional, default is 0.3
});
});
To see the plugin in action: http://dev.ghost.no/demo/trond/zoomify/example.html