Prevent DOM Caching
Most modern browsers have two types of cache - disk cache, where pages, css, images etc are stored, and in-memory cache, where the rendered page is stored. The second, in-memory cache can cause unnecessary problems for dynamic pages.
The common solution is often to prevent any caching of the entire page. This solution however, allows the page to be cached on disk (so it doesn't need to be downloaded each time it's viewed), without allowing the rendered page to be put into the in-memory cache.
Usage
window.onunload = function (){};
