var id_cur=0;function showhide(a){  var ul=document.getElementById("id"+a);  var ul_old=document.getElementById("id"+id_cur);      if(ul.style.display=="none")  {    ul.style.display="block";    ul_old.style.display="none";              id_cur=a;   }      }function onhighlight(a){  var p=document.getElementById("p"+a);  p.style.background="#EFF8EE";}function onlowlight(a){  var p=document.getElementById("p"+a);  p.style.background="#E0F5DF";}