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/2008-9/6382">【备战2009】高考一轮化学总攻略 </a>  下一篇：<a href="/News/2008-9/6384">【物理】如何上好高考物理复习课 </a> ';
}