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/2013-3/63710">高中数学新课标人教A版必修四全册课件 </a>  下一篇：<a href="/News/2013-3/63712">高中数学新课标人教A版必修三全册课件 </a> ';
}