Something
public text v1 · immutable<script type="text/javascript">
function addUp(){
var iP = document.getElementById('meh').getElementsByTagName('input');
var s = 0;
for(var i=0;i<iP.length;i++){
if(iP[i].checked){
s+=40;
}
}
document.getElementById('finalSum').value = "$"+s;
}
</script>