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/2011-2/32272">2011届步步高二轮复习生物课件 </a>  下一篇：<a href="/News/2011-2/32274">填报高考志愿六大禁忌与解决对策 </a> ';
}