The developers of Mozilla introduced a feature called Link Prefetching that allows web browsers that recognize it (Mozilla 1.2 and Firefox) to pre-load web pages when the CPU is idle. This mechanism is activated using special HTML code that specifies which pages should be pre-loaded. Depending on download times, this can speed up browsing accordingly by providing faster response when the user goes to the next page. Google is using the Link-Prefetching feature to load pages in the background that the user is likely to visit, such as the top search result, so that the web pages appear to load faster when the user clicks on the links.