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/2018-1/156961">2017-2018学年高中化学苏教版必修1课时跟踪检测 </a>  下一篇：<a href="/News/2018-1/156963">2017-2018学年高中英语译林版必修5：高考提能练 </a> ';
}