.checkbox:before {
    content: 'Sí' !important;
}
.checkbox:after {
    content: 'No' !important;
}
input.radio[type=radio] + label .new{
    position: absolute;
    height: 32px;
    width: 100%;
    left: 0px;
    top: -17px;
    background: url("../images/icons/32/new.png") top center no-repeat; !important; /* need correct img */
}