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/2020-8/187896">2020-2021学年物理教科版必修1教案汇总 </a>  下一篇：<a href="/News/2020-8/187898">《KS5U发布Word版》青海省海东市2019-2020学年高二下学期期末联考试题 </a> ';
}