imgAreaSelect

imgAreaSelect is a jQuery plugin for selecting a rectangular area of an image. It allows web developers to easily implement image cropping functionality, as well as other user interface features, such as photo notes (like those on Flickr).

Plugin features:

• Highly configurable
• Customizable with CSS styling
• Handles scaled images
• Keyboard support for moving and resizing the selection
• Supports callback functions
• Provides API functions for easier integration with other application components
• Lightweight — the packed version is less than 8KB

The plugin works in all major browsers, including Firefox 2+, Opera 9.5+, Google Chrome, Safari 3+, and Internet Explorer 6+.

http://odyniec.net/projects/imgareaselect/