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/2015-12/119609">【优化课堂】2015-2016学年高二数学人教A版选修1-2教案 </a>  下一篇：<a href="/News/2015-12/119611">人教B版高中数学必修一教案 </a> ';
}