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/2016-11/134530">【金版优课】高中化学人教版选修5 课件+练习+单元检测 汇总 </a>  下一篇：<a href="/News/2016-11/134532">人教版高一语文选修系列外国小说欣赏课件 </a> ';
}