CSS Based Progress Bar Widget For Prototype.js

Control.ProgressBar is a percentage based progress bar widget for Prototype.js.

Progress bar can grow:

• on a timed interval
• when events in your application tell it to
• it can be set to poll a given URL.

The mechanism for action is simple, just create a div with relative or absolute positioning, attach the JavaScript, and this control will set the width of the inner element as necessary.