function c_bus_hideAll()
{
  if (document.forms[0].c_bus != null)
  {
    if (document.forms[0].c_bus.checked == false) {changeObjectVisibility("c_bus_QS","hidden","none");}
  }

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