This feature requires Microsoft Internet Explorer 5.5 or later. Click the following icon to install the latest version. Then reload this page to view the sample. The links in the following sections provide access to the object model exposed by the visual filters and transitions. Procedural Surfaces Procedural surfaces are colored surfaces that display between the content of an object and the object's background.
Procedural surfaces define each pixel's RGB color and alpha values dynamically.
Only the procedure used to compute the surface is stored in memory. The content of an object with a procedural surface applied is not affected by the procedural surface. Procedural Surfaces AlphaImageLoader Displays an image within the boundaries of the object and between the object background and content, with options to clip or resize the image. Gradient Displays a colored surface between the object 's background and content. Though all filters and transitions are technically filters, the following filters statically change the way the content of an object displays.