JavaScript and Ajax for the Web: Visual QuickStart Guide, Seventh Edition

Using the Container Utility

In the parlance of the Yahoo! User Interface Library, a container is an object that encloses any kind of content. There are two basic types of containers: Module and Overlay. The first can appear anywhere on your page, and the user treats it as a single unit (if you allow it to be manipulated). Overlay is an extension of Module that floats above the document’s inline content and does not affect the flow of text and images on the page.

There are four other container types related to Overlay. Tooltip creates small floating boxes similar to the ones that provide contextual help in operating systems like Windows and Mac OS X. Panel mimics an operating system window. Dialog creates a standard dialog that can look like ...