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/2012-9/52977">高考专家指导：高三化学零基础提分秘笈 </a>  下一篇：<a href="/News/2012-9/52979">从伦敦奥运选手的成败看如何备考高考 </a> ';
}