OpenLayers provides the mapping foundation for your web application. To build an application with rich user interface components, OpenLayers is best paired with a UI framework. There are a number of full-featured UI frameworks available; Ext JS, Dojo (via Dijit), and YUI are popular frameworks with good layout controls and widgets. This module provides examples of OpenLayers integration with Ext JS as well as with the less established, but rapidly developing, jQuery UI libraries.