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/2013-9/73463">2013-014学年必修三测试题 </a>  下一篇：<a href="/News/2013-9/73466">2013级生物阶段测试 </a> ';
}