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/2020-3/183864">2021高考文科数学（人教A版）一轮复习 </a>  下一篇：<a href="/News/2020-3/183866">2021版历史人教通史导练大一轮复习 </a> ';
}