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/2012-5/48888">2012高三生应该注意预防和消除身体疲劳! </a>  下一篇：<a href="/News/2012-5/48890">适合高考生的考前一周营养食谱 </a> ';
}