.img2 {
   display: block;
   float: left;
   background-image:url("http://arquitetosdeideias.com/explore/uploads/Botoes_11x22.png");
   width:206px;  /* Tamanho das partes 206x208 */
   height:208px;
   border: 0px solid #ccc;
}

.parte1 {
  background-position: 0 0;
}

.parte2 {
   background-position: -206px 0;
}

.parte3 {
   background-position: 0 -208px;
}

.parte4 {
   background-position: -206px -208px;
}
.parte5 {
   background-position: 0 -416px;
}
.parte6 {
   background-position: -206px -416px;
}
.parte7 {
   background-position: 0 -624px;
}
.parte8 {
   background-position: -206px -624px;
}