Alternatively it is possible to change the border using CSS.
This is the input radio:
And this is the CSS:
.highlighted {
outline:1px solid #F00; /* Firefox, Opera, Chrome, IE8+ */
*filter: progid:DXImageTransform.Microsoft.dropshadow(OffX=-1, OffY=0,color=#FF0000) progid:DXImageTransform.Microsoft.dropshadow(OffX=1, OffY=0,color=#FF0000) progid:DXImageTransform.Microsoft.dropshadow(OffX=0, OffY=-1,color=#FF0000) progid:DXImageTransform.Microsoft.dropshadow(OffX=0, OffY=1,color=#FF0000); /* IE6, IE7 */
}
