Some of the older images in the database use a script program to show the image. A known problem is that some Browser security settings and/or internet software will disable the program and not allow the images to be shown.
 

If you can see the picture of Cinderella at this link: Check Cinderella Image and not other images in the database then you have some software or browser setting that is blocking the image program. If the image of Cinderella does not appear, then the entire server may be temporarily down and it should work fine at a later time.  If you have a security block, make sure your browser settings allow "active scripting."  For internet explorer, follow the following menu directions:

Tools>Internet Options>Security>Custom Level>Scripting>Active Scripting>Enable