Background Image cut off vertically

Hello,

I’ve utilized the following CSS: The image is not stretching vertically so that the viewer is able to see the full image regardless of the content. I’d like the full image to show – regardless of what I do with the footer settings the image is cut off on the home page.
body{
background-image: url(http://);
background-position: center center;
background-attachment: fixed;
background-repeat: no-repeat;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
height: 100%;
width: 100%;
z-index: 0;
top: 0;
left: 0;
}