DhtmlxLayout – Ajax Web Interface

DhtmlxLayout – Ajax Web Interface: "DhtmlxLayout is a JavaScript DHTML component that provides powerful and efficient solution for building Ajax-enabled web interfaces with ease. This component allows you to programmatically define interface structure, including layout of elements and their sizes. End users can easily resize interface elements, collapse or expand them.

Demo: http://dhtmlx.com/docs/products/demoApps/index.shtml

Download: http://dhtmlx.com/docs/download/dhtmlxLayout.zip

Source: http://dhtmlx.com/docs/products/demoApps/index.shtml