function chkdiv(divid){
	var chkid=document.getElementById(divid);
	if(chkid != null){return true; }
	else {return false; }	
}
if (chkdiv('fy')){
	document.getElementById('fy').innerHTML='上一篇：<a href="/News/2019-12/181196">2019-2020学年高中人教版政治必修4课件+学案+课时精炼 汇总 </a>  下一篇：<a href="/News/2019-12/181198">2020春物理必修2（粤教版）课件+分层训练+检测 汇总 </a> ';
}