Editing Radomizing Image Filenames (section)

==JavaScript/AJAX==
===HTML thumbnail container attributes===
*<code>.gallery-tn-container</code> assigned "click" handler which displays edit and delete buttons.
**"click" assignment: <code>LITTLED.Gallery.bindImageOverlayHandlers()</code>
**<code>.gallery-tn-container</code> template file: <code>[COMMON_LIB]_templates/forms/images/image_upload_link.php</code>
*<code>.gallery-tn-container</code> attributes:
**<code>data-id</code> image link record id
**<code>data-pid</code> parent record id
**<code>data-tid</code> content type id of the parent record
**<code>data-op</code> operation, e.g. "upload", "edit", or "delete"
**<code>data-rand</code> randomization flag
***Randomization attribute value is assigned by the PHP <code>image_upload_class</code> passed to the thumbnail template
===How the randomization flag value is passed to the AJAX script===
*<code>.gallery-tn-container</code> onClick handler copies its attributes to the edit and delete buttons.
*upload/edit button (<code>#edit-galltn-btn</code>) has onClick handler <code>LITTLED.Gallery.selectThumbnail()</code>
**randomization flag value is retrieved from the edit button's attributes
**randomization flag value is passed to the AJAX script