As part of a website I am developing (aeveryday.omeka.net ). Our users want a page that includes a series of tiles of an image that link to the various exhibits where we will be placing student work. I was thinking I would be able to embed links to the images in my Omeka.net site but discovered that the software generates expiring Amazon s3 links for the items. Is there another way to use images directly uploaded to the site? Could I simply place a shortcode like [exhibits] in columns? How would I customize that in the css?