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/2012-10/55329">新型仪器是创新实验的基础 </a>  下一篇：<a href="/News/2012-10/55331">化学演示实验1 </a> ';
}