clean up html/css make fluid styles

Our home page at http://www giviton com has some html/css issues we need fixed. We need the upper right hand corner pixel issue fixed as well as the button rollovers. Right now the site is designed to be one set height. We need it to be fluid, meaning we can add more content in the middle rounded corner rectangle (below the rectangle that holds the logo and buy now image) and we also need to be able to add content to the bottom (outer) rounded corner rectangle (above the giv*it*on text-image) You must be able to do this without ftp access or any other access to our backend. php/css Thanks