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/2012-11/58039">肠胃病专家给胃"平反":睡前吃东西并不发胖 </a>  下一篇：<a href="/News/2012-11/58041">每天慢走半小时能让平均寿命增加三年 </a> ';
}