$.getJSON("http://api.flickr.com/services/rest/?",
        {
            method: "flickr.photosets.getPhotos",
            api_key: "1408bff5f72a4b84b924d13e8562b6a2",
            photoset_id: "72157629903184261",
            format: "json"
        },
        function(data) {
            $.each(data.items, function(i,item){
            $("<img/>").attr("src", item.media.m).appendTo("#flickrstream");
            if ( i == 3 ) return false;
        });
    });