title: Background Image rotation with pre-loading
body: <p>I need 10 background images (covering) to rotate in the background of a website.</p>
  
  <p>They will be around 200k each, so we don't want to see them loading.</p>
  
  <p>How can I do use Javascript (or JQuery) to force all, or some, images to preload, and perhaps not do the rotation if bandwidth is low?</p>
  
  <p>Thanks.</p>