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/2020-3/183745">2021版新高考化学人教大一轮复习 </a>  下一篇：<a href="/News/2020-3/183747">湖湘名校2019-2020学年高二线上自主联合检测 </a> ';
}