The Electronic Journal Center now contains Supplementary Objects.

Sometimes an electronic article is more than just text. Video, interactive diagrams and other supplementary material may complement the printed word. The OhioLINK EJC now contains links to supplementary material! (when provided by the publisher)

Check out this example from Experimental Cell Research:
http://journals.ohiolink.edu/ejc/article.cgi?issn=00144827&issue=v313i0013&article=2766_domgaraamoad