<a href="http://deepliquid.com/content/Jcrop.html">http://deepliquid.com/content/Jcrop.html</a>
CropZoom
<a href="http://www.gastonrobledo.com.ar/cropzoom/index.html">http://www.gastonrobledo.com.ar/cropzoom/index.html</a>
这个可以旋转图片
<a href="http://odyniec.net/projects/imgareaselect/">http://odyniec.net/projects/imgareaselect/</a>