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/2012-11/57589">2012高一英语课件：外研版必修3 </a>  下一篇：<a href="/News/2012-11/57591">高三数学复习常见24问及解答2 </a> ';
}