Use an Adobe® Flex-based juxtaposition table, a two-dimensional visualization assistant, to arrange, classify, and compare potentially large quantities of data. With the juxtaposition table, you can define your own custom perspectives in a convenient and compact view. This article demonstrates how to dynamically create the table's columns and alter the table's contents. You will also learn how to display numerous items in a single cell and how to give cells their shape and color.

Accessibility has become a hot topic as increased awareness and growing requirements demand that applications take into account the needs of all potential users. Accessibility covers not only the Web application, but document, desktop application and hardware, and so on. In the Web application domain, making static Web pages accessible is relatively easy. But for Web 2.0 technology, dynamic content and fancy visual effects can make accessibility testing very difficult. This article introduces the WAI-ARIA standard, which is designed to make future Asynchronous JavaScript and XML (Ajax) widgets accessible. The article also covers accessibility principles in Web 2.0 design and provides several code samples to get you started.

This is the final article in a five-part series written for the PHP developer interested in learning about an open-source, flexible, and scalable framework called Agavi. You'll learn to support file uploads, store user data in sessions, integrate third-party libraries and create custom input validators for your Agavi application.

Google Web Toolkit (GWT) lets you use the Java™ language to implement rich client user interfaces that run in a browser. In this two-part article, David Geary brings you up to speed on the latest version of GWT and shows you how to implement a desktop-like Web application.

Many developers new to Django get tripped up on the vocabulary and purpose of different pieces of the system—models, views, generic views, model managers, and so on. With some functions belonging to models and others to views, it can be confusing to know where to put the logic of your applications. The view is where most of your application logic will be executed. Before we can work with views, however, we need to look at the URL dispatching system to see how a view is matched up with an incoming request. Once we have seen the URL dispatcher and some working views, we'll take a look at some shortcuts Django offers us to accomplish these actions even more quickly. You can write entire Django sites without using models, but you'd have a hard time doing that without views or generic views.

Discover the pros and cons of using Adobe® Flex and OpenLaszlo — two leading client-side rich Internet application (RIA) development languages that are particularly useful for building Software as a Service applications for the cloud.

GMaps4JSF, a JavaServer Faces (JSF) mashup library, integrates Google Maps with JSF. Using GMaps4JSF, you can construct complex street view panoramas and maps with just a few JSF tags. You can also easily attach different components to the map. This article explains how to configure GMaps4JSF inside JSF 2.0 applications, and includes a brief introduction to JSF 2.0 Ajax. Using the article, learn how you can create a simple mashup application that uses both GMaps4JSF and JSF 2.0 Asynchronous JavaScript and XML (Ajax).

There are several tools/frameworks available today to develop RIAs. One of the leading frameworks that has garnered a lot of attention and developer interest over the last couple of years is the Flex Framework from Adobe Systems. This article introduces the RIA development framework Flex and its development IDE Flash Builder 4 (FB4) to the readers. The article covers the following:
* What is Flex Ecosystem
* Setting up the Development IDE, Flash Builder Beta 4
* Sample programs that take the reader through the mechanics of developing applications using Flash Builder 4.

There are several tools/frameworks available today to develop RIAs. One of the leading frameworks that has garnered a lot of attention and developer interest over the last couple of years is the Flex Framework from Adobe Systems. This article introduces the RIA development framework Flex and its development IDE Flash Builder 4 (FB4) to the readers. The article covers the following:
* What is Flex Ecosystem
* Setting up the Development IDE, Flash Builder Beta 4
* Sample programs that take the reader through the mechanics of developing applications using Flash Builder 4.

The unsung heroes of every application are the simple things like buttons, menus, and toolbars. In this article by Shea Frederick, Steve 'Cutter' Blades, and Colin Ramsay, we will cover how to add these items to our applications. Our example will contain a few different types of buttons, both with and without menus. A button can simply be an icon, or text, or both. Toolbars also have some mechanical elements such as spacers and dividers that can help to organize the buttons on your toolbars items. We will also cover how to make these elements react to user interaction.