Kent,

The largest version that I see is only 400 pixels high. Below is an image that is 800 pixels high (900 with the frame) as an example.

On another point, is there a reason you are using gif compressed images? Gifs get great compression because they only have a 256 color pallette. This works well for simple web graphics but you are really limiting your images with this format. Jpeg uses a 16 million color pallette which gives a much better web rendition of a photo.