Can someone explain why the thumbnails on my website show up and then they disappear? Is it because there is a javascript issue? You can take a look at
www.churchesofhistory.org/index.php?option=com_content&task=view&id=12&Itemid=27

The template I'm using has a rotating header at the top.

And if I upgrade to the Pro version would this solve the issue right off the bat?

Ok I have figured out that it is the rotating banner at the top. I can change the rotating banner to "false" and it works fine. So if I buy the Pro version will I be able to have the rotating banner and Simple Image Gallery?