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/2013-5/68317">山东省冠县一中高一生物必修2课件 </a>  下一篇：<a href="/News/2013-5/68319">2013高考生物模拟汇总 </a> ';
}