[solved] Some images showing up, others not

Hey, I've recently just put a site together for my dad and got around to uploading it about a day or 2 ago. The only issue i'm having is that for seemingly no reason random images don't appear. Here's what i've done so far:

-Checked and doubled-checked to make sure the files are on the server AND in the correct folder

-Reviewed the code several times for possible mis-spellings

-Compared the code of an image that will not appear to one that is appearing with no apparent differences

-reviewed folder names and even tried moving the images folder around on the server

-removed the folder and uploaded a fresh copy to the server, AS WELL AS the pages which they are displayed on

-Viewed the pages offline to confirm that the images work there (they do work)

I'm running out of ideas, here's a link showing what i'm talking about.

http://attard.net/add_project7.html

If you'll notice, the first 4 pictures on that page work, while the 5th and 6th do not, if u then navigate to project 4, u'll see that while the thumbnails all work fine, none of the larger images work.

Am I missing something really simple or is this some sort of weird anomaly?

Check your file extensions and make sure they're lower-case jpg (not JPG or JPEG).

^_^ THAT WORKED! thx so much