function nTabs(thisObj,Num,imgId){
if(thisObj.className == "active")return;
var tabObj = thisObj.parentNode.id;
var tabList = document.getElementById(tabObj).getElementsByTagName("li");
var url_ImgUp = document.getElementById(imgId+"_ImgUp").value;
var url_ImgDown = document.getElementById(imgId+"_ImgDown").value;
for(i=0; i <tabList.length; i++)
{
if (i == Num)
{
   thisObj.className = "active";
    if(url_ImgUp != ""){
            document.getElementById(tabObj+"_Title"+i).style.background="url("+url_ImgUp+")";
      }

      document.getElementById(tabObj+"_Content"+i).style.display = "block";
}else{
   tabList[i].className = "normal";
      if(url_ImgDown != ""){
            document.getElementById(tabObj+"_Title"+i).style.background="url("+url_ImgDown+")";
    }
   document.getElementById(tabObj+"_Content"+i).style.display = "none";
}
}
}