.panneaux1 a{float:left;width:140px;height:140px;background:url(img/accessoires/panneaux/1.png)}
.panneaux1 a:hover{background:url(img/accessoires/panneaux/1_thumbs.png)}
.panneaux2 a{float:left;width:140px;height:140px;background:url(img/accessoires/panneaux/2.png)}
.panneaux2 a:hover{background:url(img/accessoires/panneaux/2_thumbs.png)}
.panneaux3 a{float:left;width:140px;height:140px;background:url(img/accessoires/panneaux/3.png)}
.panneaux3 a:hover{background:url(img/accessoires/panneaux/3_thumbs.png)}