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

function displaySubMenu(li){
var subMenu = li.getElementsByTagName("div")[0];
subMenu.style.display = "block";}

function hideSubMenu(li){
var subMenu = li.getElementsByTagName("div")[0];
subMenu.style.display = "none";}