I have a javascript / DHTML menu system that is basically an accordion-style type drop out that automatically drops out the first level. In this level there are 4 thumbnail-ish images. If the cache of these images is not created beforehand, the dropout fails because the images aren't loaded fully. So to circumvent this, on the page before this page, I created a hidden div with those thumbnails in it. Providing they spend a half second on this page, it should cache them I'd think.
Is there a better way without the use of javascript? This was just the first thought I had.