Create the concept of an "ajax link" and use it for thumbnail rotation

and album covers in the context menu.

Notes:
- This requires context_menu() to have a CSS selector that refers to the
  <img> that we're operating on, otherwise we don't know how to find the
  thumbnail, etc.
- Create Menu_Element_Ajax_Link which has an ajax_handler attribute
  that contains a snippet of JS that we're going to run when the ajax
  call returns.
- Add $.gallery_replace_image in gallery.common.js
- Add lib/gallery.ajax.js which can be used to ajaxify any link, and have
  ui.init.js in the themes call that on all .gAjaxLink elements.

1 files changed, 1 insertions, 1 deletions

diff --git a/themes/default/views/album.html.php b/themes/default/views/album.html.php
index ce57458e..e2890482 100644
--- a/themes/default/views/album.html.php
+++ b/themes/default/views/album.html.php
@@ -19,7 +19,7 @@
       <?= $child->thumb_img(array("class" => "gThumbnail")) ?>
     </a>
     <?= $theme->thumb_bottom($child) ?>
-    <?= $theme->context_menu($child) ?>
+    <?= $theme->context_menu($child, "#gItemId-{$child->id} .gThumbnail") ?>
     <h2><span></span><a href="<?= $child->url() ?>"><?= p::clean($child->title) ?></a></h2>
     <ul class="gMetadata">
       <?= $theme->thumb_info($child) ?>