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/2012-11/58172">两大要点是高中地理图像学习的基础 </a>  下一篇：<a href="/News/2012-11/58174">高三地理地方时的计算方法复习 </a> ';
}