.checkbox { width:19px;height:25px;padding:0px;background:url(/content/img/PopUp/checkbox.png) no-repeat;display:block; }
.chkSelect { background-position-y:-50px; }
.chkSelectOver { background-position-y:-75px; }
.chkNormal { background-position-y:0px; }
.chkNormalOver { background-position-y:-25px; }