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/2015-11/117949">高三理科从三本逆袭到重本的秘籍 </a>  下一篇：<a href="/News/2015-11/117951">理转文学霸的学习秘籍，速度收藏 </a> ';
}