.wp_themeSkin .mceSplitButton a.mce_amazonproductlink span.mceAction{
  background: url('../img/amazon-icon.gif') no-repeat center center;
}

.mceContentBody .amazonproductlink{
  background: #ffc url('../img/amazon-icon-trans.gif') no-repeat 5px center;
  border: 1px solid #69c;
  display: block;
  margin: 1em 0; 
  padding: .3em .3em .3em 30px;
}