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/2019-1/171812">2019版高考数学（理）一轮精选教师用书人教通用 </a>  下一篇：<a href="/News/2019-1/171814">2019版高考化学一轮精选教师用书人教通用 </a> ';
}