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";
		  }
} 
}