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/2018-9/167243">人教版地理必修二同步配套课件 </a>  下一篇：<a href="/News/2018-9/167245">2018-2019学年高中历史岳麓版必修3课件+练习+教师用书 </a> ';
}