function c_orac20_hideAll()
{
  if (document.forms[0].c_orac20 != null)
  {
    if (document.forms[0].c_orac20.checked == false) {changeObjectVisibility("c_orac20_QS","hidden","none");}
  }

//  if (document.crForm.c_orac20.checked == false) {changeObjectVisibility("c_orac20_QS","hidden","none");}
}