Registers the Preload command to preload any images.
Preloading images used in a page improves the user experience by loading an image before it is needed. If a menu has rollover images and does not preload its images, there will be a short delay when the user mouses over the menu item for the first time, as the image must then be downloaded. Preloading the images removes this delay since the image will have likely been downloaded by the time the user mouses over the menu image.
For more information on preloading JavaScript images refer to this article.Menu Class | skmMenu Namespace