span.checkbox {
  width: 19px; 
  height: 25px;
  padding: 0 5px 0 0;
  background: url(/v3/images/buttons/checkbox.png) no-repeat;
  display: inline;
  clear: left;
  float: left;
  z-index: 10px;
}
span.radio {
  width: 19px;
  height: 25px;
  margin: 0px 0px -10px 0;
  background: url(/v3/images/buttons/checkbox.png) no-repeat;
  display: inline-block;
  z-index: 10px;
}