function changediv(id1,id2)
{
	if(id1=="news_top_li1")
	{
	document.getElementById("news_top_li1").className="news_top_li2";
	document.getElementById("news_top_li2").className="news_top_li1";
	document.getElementById("about").style.display="block";
	document.getElementById("news_list").style.display="none";

	}
	 else if(id1=="news_top_li2")
	{
	document.getElementById("news_top_li1").className="news_top_li1";
	document.getElementById("news_top_li2").className="news_top_li2";
	document.getElementById("about").style.display="none";
	document.getElementById("news_list").style.display="block";

	}
}