input[type="checkbox"]{ display: none; }
input[type="radio"]{ display: none; }

label{
  color:#545454;
  font-family: Arial;
  font-size: 14px;
  text-shadow:0 1px 1px #f2f2f2;
}

input[type="checkbox"] + label span{
  display: inline-block;
  width: 19px;
  height: 19px;
  background: url(../recursos/images/sprites/check_radio_sheet.png) left top no-repeat;
  margin: -1px 4px 0 0;
  vertical-align: middle;
  cursor:pointer;
}

input[type="checkbox"]:checked + label span{
  background: url(../recursos/images/sprites/check_radio_sheet.png) -19px top no-repeat;
}

input[type="radio"] + label span{
  display: inline-block;
  width: 19px;
  height: 19px;
  background: url(../recursos/images/sprites/check_radio_sheet.png) -38px top no-repeat;
  margin: -1px 4px 0 0;
  vertical-align: middle;
  cursor:pointer;
}

input[type="radio"]:checked + label span{
  background: url(../recursos/images/sprites/check_radio_sheet.png) -57px top no-repeat;
}