Skriv noget på siden basert på valg i Option butt

<script type="text/javascript">
function showSex(elmInp) {
    var aLbls = elmInp.parentNode.parentNode.getElementsByTagName("label");
    aLbls[aLbls.length-1].firstChild.nodeValue = "Du valgte: '" + (elmInp.value==="1" ? "Mand'" : "Kvinde'");
}
</script>

<div><label>Mand: <input onclick="showSex(this)" type="radio" name="sex" value="1"></label>
<label>Kvinde: <input onclick="showSex(this)" type="radio" name="sex" value="2"></label>
<label>&nbsp;</label></div>

<script type="text/javascript">
function showSex(elmInp) {
    var elmLast = elmInp.parentNode.parentNode.lastChild;
    elmLast.firstChild.nodeValue = "Du valgte: '" + (elmInp.value==="1" ? "Mand'" : "Kvinde'");
}
</script>