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/2018-6/163792">【导与练】2018版高中历史人教版必修一课件+试题 </a>  下一篇：<a href="/News/2018-6/163794">2017-2018学年高中化学三维设计江苏专版选修五课件+试题+讲义 </a> ';
}