Make a small edit on my website which I can't do

All I want is this image on my website [login to view URL] Turning into it's proper size (450x328) when you click it, so the small image blows up into a big image which is the size (450x328), when it blows up into the big image you must be able to right click & save as so you can save it as the size 450x328. You can do this by importing this jQuery script I think from dynamic drive here [login to view URL] Check out the examples on this page ^ If you think you can do it I'll award you the project, simple.