images = new Array(0);

images[0] = "http://img11.imageshack.us/img11/8089/logo2009.png";

index = Math.floor(Math.random() * images.length);

document.write("<style>");

document.write("#header-wrapper {");
document.write("width:900px;");
document.write("height:240px;");
document.write("margin-top: 0;");
document.write("margin-right: auto;");
document.write("margin-bottom: 0;");
document.write("margin-left: auto;");
document.write("padding-top: 0px;");
document.write("padding-bottom: 0px;");
document.write("padding-right: 0px;");
document.write("padding-left: 0px;");
document.write("background-color:#393939;");
document.write("background-image: url("+images[index]+");");
document.write("background-repeat: no-repeat;");
document.write("background-position: 0px top;");
document.write("}");
document.write("</style>");