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/2018-12/170705">2018-2019学年高二英语牛津译林版选修11课件+文档 </a>  下一篇：<a href="/News/2018-12/170707">2018-2019学年《导与练》高二物理人教版选修3-1课件+练习 </a> ';
}