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/2012-10/55204">固体酒精 </a>  下一篇：<a href="/News/2012-10/55206">弱酸性洗发剂能减少皱纹 </a> ';
}