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/2019-7/176292">2020版《新步步高》高考人教版化学一轮复习文档 </a>  下一篇：<a href="/News/2019-7/176294">2020《赢在微点》历史人教版一轮复习高效作业+课件 </a> ';
}