body {
background-color: black;
color: #2E2E2E;
line-height: 16px;
}

<a href="#" style="
    margin: 0 auto;
    background: black url('lexusgs_1258x1000.jpg') no-repeat; background-position: center top; position: absolute; display: block;
    width: 100%;
    height: 1000px; z-index:1;

"></a>

div moraš omotat oko obje tablice:
div ima
ovaj css

position: relative;
z-index: 2;
width: 960px;
margin: 0 auto;

za obje tablice: width atribut 980

a css:

padding-left: 5PX;
padding-right: 5PX;
z-index: 2;
position: relative;
background-color: white;