고정된 크롭영역, 프리영역, 크롭영역 미리보기 등을 지원하네요
이것을 이용하며 PHP 썸네일 만들때 유용할거 같습니다..
The JavaScript image cropper UI allows the user to crop an image using an interface with the same features and styling as found in commercial image editing software, and is is based on the Prototype JavaScript framework and script.aculo.us.
http://www.defusion.org.uk/code/javascript-image-cropper-ui-using-prototype-scriptaculous/

