1. A computer-implemented method, comprising: responsive to a first search query, providing for display, in a graphical user interface window, a first set of search results and search refinement links, each search refinement link corresponding to a different refinement query term; pre-fetching a second set of search results for a subset of the search refinement links based on an ordering of the search refinement links in the graphical user interface window; determining that a mouse pointer is positioned within a threshold number of pixels of a first search refinement link of the subset of the search refinement links; providing for display the second set of search results associated with the first search refinement link, the second set of search results determined using a second search query associated with the first search refinement link; determining that the mouse pointer is positioned within the threshold number of pixels of a second search refinement link of the search refinement links, the second search refinement link distinct from and adjacent to the first search refinement link; calling a search service to pre-fetch a third set of search results upon determining that the mouse pointer is positioned within the threshold number of pixels of the second search refinement link of the search refinement links, the search service being requested to execute a third search query associated with the second search refinement link; obtaining, from the search service, the third set of search results having one or more images of one or more items related to the third search query; and providing for display, in a preview window positioned over a portion of the first set of search results, the one or more images of the one or more items of the third set of search results, the one or more images of the one or more items corresponding to the second search refinement link provided for display without receiving an indication of a selection of the second search refinement link.
3. The computer-implemented method of claim 1 , further comprising: scrolling across the preview window the one or more images of the one or more items related to the second search refinement link.