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/2012-11/57712">高三数学复习关键整是理题型 </a>  下一篇：<a href="/News/2012-11/57714">人类学家推测古人类最先会说“爸爸”一词 </a> ';
}