Hey guys, web developers and javascript code enthusiast, there's something I want to introduce to you. The Ext JS, a cross-browser JavaScript library for building rich internet applications.
- High performance, customizable UI widgets
- Well designed, documented and extensible Component model
- Commercial and Open Source licenses available
Some features are as follows:

Various example form using collapsible fieldsets, column layout, nested Tab panels and more.

A more customized DataView supporting sorting and filtering with multiple templates.

A google map wrapper class that enables easy display of dynamic maps in Ext panels and windows.