导入任何custom.js文件时，JSON提要会中断

I use the instagram API to have a live feed on my website which can be viewed here @ The Dirty Cookie.

<script>

    $(function() {
        $.ajax({
            type: "GET",
            dataType: "jsonp",
            cache: false,
            url: "https://api.instagram.com/v1/users/<?=$user_id?>/media/recent/?access_token=13137.f59def8.1a759775695548999504c219ce7b2ecf",
            success: function(data) {
                for (var i = 0; i < <?=$num_to_display?>; i++) {
            $(".instagram").append("<div class='instagram-placeholder'><a target='_blank' href='" + data.data[i].link +"'><img class='instagram-image' src='" + data.data[i].images.low_resolution.url +"' /></a></div>");   
                }     

            }
        });
    });

    </script>

This works perfectly...until I add

<script type="text/javascript">

            jQuery(function($){

                $.supersized({
                    slides  :   [ {image : 'slides\background1.jpg', title : ''} ]
                });
            });

</script>

My question is why in the world would adding that js break the JSON feed? Firebug shows that it doesn't even attempt to GET the images from the instagram API. While experimenting, I've found that putting practically any other JavaScript anywhere on the site will break that JSON feed. Any suggestions?

try use full url in image : slides\background1.jpg?