body{margin: 0px;
    padding: 0px;
    font-family: helvetica, arial, sans-serif; 
    color: #000000;
    font-size: 0.9em;
    line-height: 1.4em;}

.header {margin: auto;
    padding: 65px 0 0 0px;
    width: 900px; height: 105px;
    background: url("../images/header.jpg") #FFFFFF bottom left no-repeat;}

.main {margin: auto;
    padding: 25px 0 50px 5px;
    width: 820px;}

#menu {
    position: relative;
    left: 628px;
    width: 232px;}

#menu li {
    margin: 0;
    padding: 0;
    list-style: none;
    position: absolute;
    top: 23px;}

#menu li, #menu a {
    height: 28px;
    display: block;}

#home {
    left: 0px;
    width: 49px;
    background: url('../images/home.jpg') 0 0;}

#bio {
    left: 49px;
    width: 31px;
    background: url('../images/bio.jpg') 0 0;}

#cv {
    left: 80px;
    width: 32px;
    background: url('../images/cv.jpg') 0 0;}

#research {
    left: 112px;
    width: 65px;
    background: url('../images/research.jpg') 0 0;}

#gallery {
    left: 177px;
    width: 55px;
    background: url('../images/gallery.jpg') 0 0;}



#home a:hover {
    background: url('../images/home.jpg') 0 -28px;}

#bio a:hover {
    background: url('../images/bio.jpg') 0 -28px;}

#cv a:hover {
    background: url('../images/cv.jpg') 0 -28px;}

#research a:hover {
    background: url('../images/research.jpg') 0 -28px;}

#gallery a:hover {
    background: url('../images/gallery.jpg') 0 -28px;}