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/2013-9/72719">【KS5U精品汇总】2014学年高一生物导学案 </a>  下一篇：<a href="/News/2013-9/72721">高考资源网无忧题库诚聘学科站长 </a> ';
}