A dotjs script to display comics near the "signed prints" select list at http://store.xkcd.com/

store.xkcd.js

var select = $('select#SignedPrints'),
    form = select.closest('form'),
    dst = $('<img>').css({display:'block',margin:'0 auto 5px'});
form.before(dst);

select.bind('change', function(){
    var option = $(this),
        id = $(this).val().replace(/.*-0?(\d*)-.*/, '$1'),
        uri = 'http://xkcd.com/' + id;

    dst.css('opacity', '0.5');
    $.ajax({
        url: uri,
        success: function(response) {
            var page = $(response),
                src = page.find('#middleContent img');
            dst.attr('src', src.attr('src'))
               .attr('title', src.attr('title'));
            dst.bind('load', function(){ dst.css('opacity', 1) });
        }
    });
});