//<!--
  function OpenAnsw(ans_id) {
    var obj_ctrl = getObj(ans_id);
    if ( obj_ctrl ) {
      obj_ctrl.style.display = (obj_ctrl.style.display == "none" ? "block" : "none");

    }
  }
  
  function getObj(obj_name, doc_obj) { //get DOM node
    if (!doc_obj) doc_obj = document;
    if (doc_obj.all)
        return doc_obj.all[obj_name];
    else if (doc_obj.getElementById)
        return doc_obj.getElementById(obj_name);
    return null;
}

  
//-->