body { background-image: url(bg.gif); overflow:hidden; margin:0; padding:0;}

#logo div {  height: 75px; overflow:hidden; cursor: pointer; width:350px;  margin-left: auto; margin-right: auto; }
#logo {width:100%;  background-color: #fff;  position: absolute; top: 40%; overflow:hidden; padding-top:17px; padding-bottom: 10px;}
#logo img {position:absolute; }