Yahoo! recommends YUI 3. Learn about YUI 3 on YUILibrary.com.
This example shows how to make a DIV resizable, using a proxy element.
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Suspendisse justo nibh, pharetra at, adipiscing ullamcorper.
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Suspendisse justo nibh, pharetra at, adipiscing ullamcorper.
We are just going to make the element #resize resizable.
Note that we have placed the CSS property overflow: hidden on the element to keep the text from escaping when we resize.
To make use of the proxy element, simply pass proxy: true as part of the Resize configuration.
By default, the Resize Utility assumes that you want to resize the element from 3 handles. Right, Bottom & Bottom Right. You can change this by setting the handles configuration attribute. See the API docs for more information.
You can load the necessary JavaScript and CSS for this example from Yahoo's servers. Click here to load the YUI Dependency Configurator with all of this example's dependencies preconfigured.
All YUI 2.x users should review the YUI 2.8.2 security bulletin, which discusses a vulnerability present in YUI 2.4.0-2.8.1.

Copyright © 2012 Yahoo! Inc. All rights reserved.