I'm not sure if this is a phenomenon you are experiencing, but it looks so strong, so:
<input> , . CSS, , ( , ) . IE, , .
, , HTML:
<input type="radio" class="radio" ... />
CSS :
input {
background-image:url(fancy.png);
}
input.radio {
background-image:none;
}
, , , , IE6 (, Windows 2000 , , ).