//定义内容中的切换效果（选项卡）
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+"_Title"+i).className = "active"; 
    		document.getElementById(tabObj+"_Content"+i).style.display = "block";
		}else{
			document.getElementById(tabObj+"_Title"+i).className = "normal"; 
			document.getElementById(tabObj+"_Content"+i).style.display = "none";
		}
	} 
}