i would imagine that programming a site like this for all possible combinations of screen resolution would be a huge, monumental task...
what might be a better solution would be to download the original wallpaper or a size that is larger than your screen, and then let your operating system adjust it to your screen resolution. both windows and macs do a really clean job at resizing a wallpaper to fill your monitor at any given resolution. also, in a year or two, when you get that huge laptop of one's dreams, you'll already have the larger size wallpapers. i always download wallpapers in the largest size possible, or the original... the picture is always better looking, and i just let the operating system do the work for me. yes, it is more of a work around, but it future proofs my wallpapers, and it allows me to enjoy the site without worry.
toodles,
harmless
