function cnsUncheck(theForm, ckBox, toUnck)
{
  var ckBoxToUnCheck;
  var nrOfBoxes,eltName,formName,nrOfElts;
  if (theForm.checked && toUnck != null)
  {
    ckBoxToUnCheck = toUnck.split(/\s*,\s*/);
    nrOfBoxes      = ckBoxToUnCheck.length;
    formName = theForm.form.name;
    nrOfElts = document.forms[formName].elements.length;
    for (var i=0; i < nrOfElts; i++)
    {
       for (var j=0; j < nrOfBoxes; j++)
       {
            if (ckBoxToUnCheck[j].toString() == document.forms[formName].elements[i].name.toString())
            {
               document.forms[formName].elements[i].checked = false;
            }
       }
    }
  }
}