It is more than 100px. Right now, your header is 199px.
Your image is inside an ID of #headerphoto.
Are you trying to make it smaller? If so, you need to start with an image that has a smaller height.
You don't need to post any of your CSS, since that can be seen using tools like Firebug. If you're not using Firebug, install it. It will help you to tackle this problem.