function tabit(id,cid) {
tab5d.className="taboff";tabcv.className="taboff";tabbi.className="taboff";tabcc.className="taboff";tabbd.className="taboff";id.className="tabon";
c5d.style.display="none";ccv.style.display="none";cbi.style.display="none";ccc.style.display="none";cbd.style.display="none";cid.style.display="block";
}