Tumblrの写真をJavascriptで表示 Captionあり

<script src="http://cikato.tumblr.com/api/read/json" type="text/javascript"></script>

<script type="text/javascript">
n = tumblr_api_read["posts-total"];
limit = 18;
i2 = 0;
for (i = 0; i < n; i++) {
  if (tumblr_api_read["posts"][i]["type"] == "photo") {
    photourl = tumblr_api_read["posts"][i]["photo-url-75"];
    url = tumblr_api_read["posts"][i]["photo-link-url"];
    caption = tumblr_api_read["posts"][i]["photo-caption"].replace(/<\/?[^>]+>/gi, "");

    label =  '<img alt="' + caption + '" src="' + photourl  + '" align="left">';
    document.write('<p><a href="' + url + '">' + label + '</a></p>');
    if (++i2 >= limit) break;
 }
}
</script>