If your PC uses the 'stock' Windows browser, it's most likely IE, or called Internet Explorer. Sometimes this browser cannot handle several pictures on a web site document that you clicked on. If you see "blank" picture frames, try hitting the "refresh" button to re-load the rest of the pictures. This might be required to do 2 or 3 times for the entire page to show. I think it's a "bug" with I.E, but rather to get into a big discussion on the various browsers (I use Netscape) I'm offering a simple solution. By clicking on that "key" word you opened a new browser "window" to read this announcement. Hit the little "X" on the upper right (normally located) of your screen to close this announcement out.
Happy viewing !