 <p>If you are looking to just "preload" the images so that you can use them later (in your app/page), then you can use the following HTML 5 code:</p> <pre><code>&lt;link rel="prefetch" href="http://davidwalsh.name/wp-content/themes/walshbook3/images/sprite.png" /&gt; </code></pre> <p>See: Link prefetching is a browser mechanism, which utilizes browser idle time to download or prefetch documents that the user might visit in the near future. A web page provides a set of prefetching hints to the browser, and after the browser is finished loading the page, it begins silently prefetching specified documents and stores them in its cache. When the user visits one of the prefetched documents, it can be served up quickly out of the browser's cache. URL, then description, then title, keywords.. and finally body.</p> <p>If for gallery, then @Santosh is correct. Or <a href="http://code.msdn.microsoft.com/Infinite-Scroll-Like-Bing-bc05262b" rel="nofollow">http://code.msdn.microsoft.com/Infinite-Scroll-Like-Bing-bc05262b</a></p>