After a long process, I finally got my ORD countdown timer to work. At first, it wouldn't load at all. I thought the problem was with where I put my code, so I tried moving it around the template area. Still no luck. Didn't find the problem until I checked Chris' blog source and realised I forgot to call the function when the page loads. Oops, stupid mistake.
Then it worked in preview but not on the actual blog itself. Shan't go into details but the inspiration was again from Chris' blog. Using the getElementById function instead of just the div id solved the problem.
Will have to update the function soon so it doesn't just give an error after my ORD date.