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/2020-11/190932">2020-2021学年地理人教版必修2课时作业+单元测试 </a>  下一篇：<a href="/News/2020-11/190934">2020-2021学年地理人教版必修2课件 </a> ';
}