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/2011-4/35190">福建省长泰一中数学北师大版必修4教案 </a>  下一篇：<a href="/News/2011-4/35192">【苏教版数学】步步高2012版大一轮复习练习 </a> ';
}