GIFfun™ by Stone Design is the key to creating Web Animations quickly - you can use Create™ to make the individiual slides...
GIFfun(tm) by Stone Design is the key to creating Web Animations quickly - you can use Create(tm) to make the individiual slides, or drag in any Image File directly into the GIFfun window, and the best part is that GIFfun is totally free, in cluding the well-commented source code.