Why is my main image partly obscured?

I have a Be-themed website at www.carhounds.co.uk; it's set up as a static main page currently. The first image on the site, at the top of the static page, is partly obscured for some reason: the colour panel featuring the heading and sub-heading of the site runs over the bottom quarter of the image. Can you tell me how I can solve this problem?

Thanks in advance, Ed Hardy