Silverlight

Microsoft Silverlight is a programmable web browser plugin that enables features such as animation, vector graphics and audio-video playback that characterize rich internet applications. Silverlight competes with products such as Adobe Flash, Adobe Flex, Adobe Shockwave, JavaFX, Curl and the JavaScript programming language. Version 2.0, now in beta-testing, brings additional interactivity features and support for .NET languages and development tools.Silverlight was developed under the codename Windows Presentation Foundation/Everywhere (WPF/E). It is compatible with multiple web browser products used on Microsoft Windows and Mac OS X operating systems. Mobile devices, starting with Windows Mobile 6 and Symbian (Series 60) phones, will also be supported. A third-party free software implementation named Moonlight is under development to bring compatible functionality to GNU/Linux.
Silverlight 1.0
A Silverlight 1.0 application hosted in Internet Explorer. Interactivity is provided by Silverlight, but user input controls are HTML controls overlaid on top of Silverlight contentSilverlight 1.0 consists of the core presentation framework, which is responsible for UI, interactivity and user input, basic UI controls, graphics and animation, media playback, Digital rights management, and DOM integration. It is made up of the following components:Input – handling input from devices like keyboard, mouse, stylus etc.UI core – managing rendering of bitmap images (including compressed raster images like JPEG), vector graphics, text and animations.Media – playback of MP3, WMA Standard, WMV7, WMV8 and WMV9/VC-1 streams.XAML – to allow the UI layout to be created using XAML markup language.A Silverlight application starts by invoking the Silverlight control from the HTML page, which then loads up a XAML file. The XAML file contains a Canvas object, which acts as placeholder for other elements. Silverlight provides various geometrical primitives like lines, ellipses and other shapes, to elements like text, images, and media etc. The elements are properly positioned to achieve the desired layout. Any arbitrary shape can be created as well. These elements can be animated using Event triggers; some animation effects are predefined, others can be created as composite of the pre-defined effects. Events like keyboard or mouse movements can also raise Events which can be handled by custom scripts