function setTab(m,n){ 
  var menu=document.getElementById("tab"+m).getElementsByTagName("li"); 
  var div=document.getElementById("tablist"+m).getElementsByTagName("div"); 
  var showdiv=[];  
  for (i=0; j=div[i]; i++){ 
  if ((" "+div[i].className+" ").indexOf(" tablist ")!=-1){  showdiv.push(div[i]);  }  } 
  for(i=0;i<menu.length;i++)  {  menu[i].className=i==n?"now":"";  showdiv[i].style.display=i==n?"block":"none";  } 
  }