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/2018-12/170221">2018-2019学年高一上学期人教版物理必修一课件+作业 </a>  下一篇：<a href="/News/2018-12/170223">2018-2019学年人教版高中地理必修二教案 </a> ';
}