function nTabs(tabObj,obj){
 var tabList = document.getElementById(tabObj).getElementsByTagName("li");
 for(i=0; i <tabList.length; i++)
 {
  if (tabList[i].id == obj.id)
  {
   document.getElementById(tabObj+"_T"+i).className = "active"; 
   document.getElementById(tabObj+"_C"+i).style.display = "block";
  }else{
   document.getElementById(tabObj+"_T"+i).className = "normal"; 
   document.getElementById(tabObj+"_C"+i).style.display = "none";
  }
 } 
}