How to Create a File Upload Progress Bar in Rails, Passenger, Prototype and Low Pro

Screencast : How to Create a File Upload Progress Bar in Rails, Passenger, Prototype and Low Pro - Rails Ill.: "An upload progress bar is one of the best ways to improve the usability of file uploads in your application. This screencast will show how to create a file upload progress bar using Rails, Passenger, Low Pro and the upload progress bar apache module."