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/2018-3/158467">2017-2018学年高中语文必修四人教版练习 </a>  下一篇：<a href="/News/2018-3/158469">2017-2018学年同步备课套餐之高一政治人教版必修3讲义 </a> ';
}