function Add(ckbx,spName,price) {
  var on = ckbx.checked;
  var el = document.getElementById(spName);
  var w=window.open("","parentWindow"); 
  if (el) el.style.display = (on)?"block":"none";
  w.document.forms[ckbx.form.name].elements[ckbx.name].checked=ckbx.checked
  w.Add(document.forms[ckbx.form.name].elements[ckbx.name],spName,price); 
}

function Sync(ckbx,frm,spName) {
  var on = ckbx.checked;
  var el = document.getElementById(spName);
  if (el) el.style.display = (on)?"block":"none";
 }

function SWin(pg) {
  var SW;
  SW = window.open(pg,"","height=550,width=470,location,resizable,scrollbars");
}

function check(ckbx) {
  w=window.open("","parentWindow"); 
  document.forms[0].elements[0].checked = w.document.forms[ckbx.form.name].elements[ckbx.name].checked;
  spName = document.getElementsByTagName('SPAN').item(0).id;
  var on = document.forms[0].elements[0].checked;
  var el = document.getElementById(spName);
  if (el) el.style.display = (on)?"block":"none";
}