Images Not Displaying

Hi! All of the sudden most of the images on my web-site are not displaying. When I go into “Media” in the Dashboard, they don’t display either unless I click on them. This is a HUGE problem because two of the images that won’t display are the background and header! Any advice on how to fix this? For reference, here’s the web-site: http://www.http://friendsofrobloughery.com/

Thanks!