#blobs {
 width: 400px;
 height: 535px;
 background: url(images/cartes/carte_amerique2n.png);
 margin: 10px auto; padding: 0;
 position: relative;
}
#blobs li {margin: 0; padding: 0; list-style: none; display: block; position: absolute;}

#blobs a {display: block;}

#blob1 {left: 2px; top: 35px; width: 299px; height: 227px;} 
#blob2 {left: 82px; top: 0px; width: 280px; height: 204px;}
#blob3 {left: 152px; top: 240px; width: 91px; height: 60px;}
#blob4 {left: 280px; top: 322px; width: 115px; height: 115px;}
#blob1 a {height: 227px;}
#blob2 a {height: 204px;}
#blob3 a {height: 60px;}
#blob4 a {height: 115px;}

#blob1 a:hover {background: url(images/cartes/carte_amerique2n.png) -2px -777px no-repeat;}
#blob2 a:hover {background: url(images/cartes/carte_amerique2n.png) -2px -550px no-repeat;}
#blob3 a:hover {background: url(images/cartes/carte_amerique2n.png) -279px -594px no-repeat;}
#blob4 a:hover {background: url(images/cartes/carte_amerique2.png) -280px -322px no-repeat;}