The Tick

The Tick is a simple system for speeding up a website. It works by utilizing the download-deadtime while a user is viewing a page to surreptitiously pre-load images into his browser's cache so that he won't have to wait for the download when he views pages displaying those images. This system accomplishes this by having a single dot-sized image on the page (the tick) and using JavaScript to swap this image sequentially with others in a list, hopefully invisibly to the user.

Here's a zip file containing the code and a little demonstration. The JavaScript code is in the file tick.html.

tick.zip