label.standartCheckbox span.holder {
    height: 28px; /* Total height of your radio buttons image */
    background: url(../images/icons/checkbox.png) 0 0px no-repeat; /* Path to your radio button image */
}
label.standartCheckbox:hover span.holder{top: -14px !important;}
label.checked.standartCheckbox span.holder,
label.checked.standartCheckbox span.holder,
label.checked.standartCheckbox:hover span.holder,
label.checked.standartCheckbox:hover span.holder { top: 0px !important; } /* Background position when checked */
label.standartCheckbox span.holderWrap {
    display: block; float: left;
    position: relative;
    margin: 0;
    margin-top: 2px;
    margin-right: 5px;
    overflow: hidden;
}

label.standartCheckbox span.holder {
    display: block;
    position: absolute;
    top: -14px  !important; left: 0;
}