I'm afraid I am using DNN 7 :(
I found the following in \Portals\_default\default.css:
.dnnRadiobutton { display: inline-block; cursor: pointer; } .dnnRadiobutton .mark{ display: inline-block; }.dnnRadiobutton img {width:20px; height: 18px;min-width: 20px;vertical-align: middle; }.dnnRadiobutton img { background: transparent url(../../images/radiobutton.png) no-repeat;}.dnnRadiobutton img { background-position: 0px 0px }.dnnRadiobutton-hover img { background-position: 0px 0px }.dnnRadiobutton-checked img { background-position: -50px 0px }.dnnRadiobutton-disabled img { opacity: .5; }.dnnRadiobutton-checked-error img { background-position: -150px 0px }.dnnRadiobutton-error img { background-position: -100px 0px }
Am I correct in thinking the relative path to the radiobutton.png will be form the location of the default.css? If so then the image should have been found because I can see it in \images folder?