#nav {  
     background:url("../images/nav.gif") 0 0 no-repeat;  
     width:800px;
     height:125px;
     margin:0;
     padding:0;
}  
#nav li span {
     display: none;
}

#nav li {
     float:left;
     list-style:none;
     position:relative;
}  
#nav li, #nav a {  
     height:125px;
     display:block;  
     margin:0;  
     padding:0;  
}

li#home {
     width:337px;
}  
li#illustration {
     width:139px;
}  
li#photography {
     width:126px;
}  
li#design {
     width:198px;
}  

#home a:hover {
     background:url("../images/nav.gif") -0px  -125px no-repeat;
}  
#illustration a:hover {
     background:url("../images/nav.gif") -337px  -125px no-repeat;
}  
#photography a:hover {
     background:url("../images/nav.gif") -476px  -125px no-repeat;
}  
#design a:hover {
     background:url("../images/nav.gif") -602px  -125px no-repeat;
}