Jcrop – the jQuery Image Cropping Plugin
Jcrop is the quick and easy way to add image cropping functionality to your web application. It combines the ease-of-use of a typical jQuery plugin with a powerful cross-platform DHTML cropping engine that is faithful to familiar desktop graphics applications.
You may find more information on the plugin site: http://deepliquid.com/content/Jcrop.html
jQuery_Mobile First Look