var ans;

function formchk(f) {
  v = new Array (clickchk(f.case1), clickchk(f.case2), clickchk(f.case3), clickchk(f.case4));
  for (i in v){
    if (!v[i]) {
      alert ('全ての設問にご回答ください。'); return;
    }
  }
  ans = f.action+'?case1='+v[0]+'&case2='+v[1]+'&case3='+v[2]+'&case4='+v[3];
  w = window.open ('ans.html', f.target, 'width=570, height=549, toolbar=no, location=no, status=no, menubar=no, scrollbars=no, resizable=no'); return false;
}

function clickchk(r) {
  var i;
  if (r.length) for (i=0;i<r.length;i++) if (r[i].checked) return (r[i].value);
  else if (r.checked) return (r.value);
  return false;
}

function set_onsubmit() {
  document.getElementById("choice08").onsubmit = function() { formchk(this); return false; };
}

onload_items[onload_items.length] = set_onsubmit;