Image zoom effect
Features:

• Support mousewheel to control zoom state!
• InitZoomState: the init zoom state,can be set a number or 'auto'.
• ZoomRange : the min/max zoom state of the image.default 1X to 4X.
• ZoomStep : zoom state change step.default 0.5.

Work with Dynamic Zoom
It is just easy to use it for dynamic zoom.You need only to chang the original image and the large image src attr. For example:

$(function(){
	$(".thumb-list img").click(function(){
		var src = $(this).attr("src");
		var large = $(this).data("large");
		$("#zoomblock>img").attr("src",src);
		$("#zoomblock .he-zoom>img").attr("src",large);
	});
});