function zsshownavd(k,h){
   for(var i=0;i<3;i++){document.getElementById("zsmaind_"+k+i).style.display="none";}
   for(var i=0;i<3;i++){document.getElementById("zsnavtitled_"+k+i).className="zsdivnavdA";}
   document.getElementById("zsnavtitled_"+k+h).className="zsdivnavdB";
   document.getElementById("zsmaind_"+k+h).style.display="block";
  }