input[type="checkbox"] {
display: none;
}
input[type="checkbox"] + label {
display: inline-block;
padding-left: 1em;
background: url(checkbox_states_spritesheet.png) left center no-repeat;
cursor:pointer;
}
input[type="checkbox"]:checked + label {
background: url(check_radio_sheet.png) -1em center no-repeat;
}