An Image Rotator Placeholder Control

We have all seen advertisements on websites. There are banners arranged horizontally at the top of the page, medium-sized square boxes located at a corner, long vertical banners on either side of the page—advertisements are everywhere. Generally, advertisements are just images designed to draw attention and entice visitors to click on them. A popular form of advertising these days is Shockwave Flash, which offers greater interactivity with low file size.

As advertisements are so popular on the Web, authors often have the responsibility of maintaining the list of advertisements on display. The image rotator placeholder control that we will build in this section provides the basic function of swapping pictures with each page load. All you will need to do to transform the images to actual advertisements is to make them clickable.

In authoring view, a textbox will be presented to authors. Here, they will specify a resource gallery that contains the images that...