function c_nasa_hideAll()
{
  if (document.forms[0].c_nasa != null)
  {
    if (document.forms[0].c_nasa.checked == false) {changeObjectVisibility("c_nasa_QS","hidden","none");}
  }

//  if (document.crForm.c_nasa.checked == false) {changeObjectVisibility("c_nasa_QS","hidden","none");}
}