Progressbar.JS is a lightweight, multipurpose, platform-independent JavaScript and CSS3 driven component that will enhance the usabiliy of your web applications. The possible use cases are unlimited - from the classic loading indicator displayed during AJAX calls through form validation to complex wizard-like interfaces - it all depends on you. It is flexible, easy to install and fully customizable featuring rich client API, custom events and imageless purely CSS3-driven skins and cool animations.