In the Online Shop Layouts: Individual Product - Large, is there a tag for the Large Image value?

Question

I need a tag for the URL to the large image in order to use the Facebook Feed dialog (share).
See example at https://aesgatorshack.worldsecuresystems.com/gator-shack/ladies/ladies-aes-pep-rally-repli ca-jersey.
When you click the "Share on Facebook" link, it doesn't use a photo.  I can specify a photo to use; however, I need the URL to the image.
Here's the Facebook code as is:
<a href="#" class="social_button social_blue" onclick="window.open('https://www.facebook.com/dialog/feed?link={tag_itemurl_withhost}&amp;app_id=271818569626492&amp;redirect_uri={tag_itemurl_withhost}& amp;name={tag_name}&amp;display=popup','Sharing My AES Gator Shack Finds','width=640,height=320');">Share on Facebook</a>
I can add the picture= parameter, but I need the URL to the image.

Answer 1

There is no way to get the value of the large image tag like you can for image fields in webapps. In webapps, if you created a field called "image" then you can output the whole image markup with {tag_image} or just the URL to the image with {tag_image_value}.
This isn't possible with the large product image.  I recently had to implement a Pin It Button on an eCommerce site on BC and had to use javascript to update the link that triggers the Pin It button with the URL of the image.  Here's what I suggest.  Instead of doing the whole code in the "onclick" attribute, you should use some jQuery and some data-* attributes and set the whole link up with that instead of inline javascript on the anchor element.
Here's a fiddle that should work for you. It requires jQuery to be loaded before you include this script on your page and requires you to update your markup to the markup shown in my example.  Should be an easy cut and paste:
http://jsfiddle.net/thetrickster/KQmdd/