search.js

function setupAjaxSearch() {
    var req = null;
    var $resultdiv = $('div.results');
    var $searchbox = $('input.search');

    function doSearch(value) {
        if (req != null) req.abort();

        req = $.ajax({
            type: "GET",
            url: "/search.php",
            data: {'search' : value},
            dataType: "html",
            success: function(html){
                $(resultdiv).html(html);
            }
        });
    }

    $searchbox.on('change', function(e) {
        doSearch($(this).val());
        e.preventDefault();
    });


}