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/2016-5/125175">人教版高中英语选修二、四、六课件汇总 </a>  下一篇：<a href="/News/2016-5/125177">【赢在课堂】2016-2017学年高一化学（人教版+苏教版）必修1课件 汇总 </a> ';
}