This library subroutine preload() causes a client browser to request
alternative application images (e.g. for a slideshow or rollover) from the server
before they are first displayed in the page.
Preloading greatly smooths animation of rollover images, slideshows and other dynamic image replacement methods -- particularly for dialup users.
Note that instances of the image object
created within Preload() are purely local, are not
intended to and in fact cannot be accessed by other