It appears that you are using large images and then scaling them down in your HTML editor (for instance, the upper left picture on your page is small on your webpage, but you can actually see it is a very large file if you load just it by entering http://home.earthlink.net/~andygere/Kayak.jpg into your browser). While this shouldn't cause any problems it does mean that the browser has to download all the extra bits for the larger picture and then scale them - which is much slower than the recommended way...

You should scale down the images on your local machine to the actual size they will be on your webpage using an image editor (PhotoShop or the like), then place them on your webpage at full size, then upload the webpage and images to your site. This might fix the partial load, and will definately make the pages load faster!

Also, you might want to make them look almost too light on the mac since the same images viewed on PCs appear lighter than on the mac (PC uses a different gamma adjustment value than the mac).

I edited one of your photos (see below)and did a quick example page that you can see at: http://www.pete-and-lisa.com/kayak/example/example.htm