#nav1, #nav2, #nav3 {
float:left;
margin:0;
padding:0;
height: 152px;
width: 105px;
overflow: visible;
}

#nav0{
float:left;
margin:0;
padding:0;
height: 150px;
width: 425px;
}


#nav1 a:link, #nav1 a:visited, #nav1 a:hover{
display: block; 
background-image: url("img/acc.png");
background-repeat: no-repeat; 
background-position: 0px 75px; 
height: 152px; 
width: 105px;
border-bottom: none; 
text-decoration:none;
}
#nav2 a:link,#nav2  a:visited, #nav2 a:hover{
display: block; 
background-image: url("img/qui.png");
background-repeat: no-repeat; 
background-position: 0px 75px; 
height: 152px; 
width: 105px;
border-bottom: none; 
text-decoration:none;
}
#nav3 a:link,#nav3  a:visited, #nav3 a:hover{
display: block; 
background-image: url("img/coor.png");
background-repeat: no-repeat; 
background-position: 0px 75px; 
height: 152px; 
width: 105px;
border-bottom: none; 
text-decoration:none;
}

html>body #nav1 a:link, #nav1 a:visited, #nav1 a:hover, #nav2 a:link,#nav2  a:visited, #nav2 a:hover, #nav3 a:link,#nav3  a:visited, #nav3 a:hover {background-position: 0px 74px;}/* hack ie vu par autre que ie soit safari */

#nav1 a:hover,  #nav2 a:hover, #nav3 a:hover{ 
background-position: 0px 78px; 
}