function Show_newstab(newsid_num,newsnum){
	for(var i=0;i<2;i++)
	{document.getElementById("newscontent_"+newsid_num+i).style.display="none";}
	for(var i=0;i<2;i++)
	{document.getElementById("newstab_"+newsid_num+i).className="tit_li2";}
	document.getElementById("newstab_"+newsid_num+newsnum).className="tit_li";
	document.getElementById("newscontent_"+newsid_num+newsnum).style.display="block";
	}