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/2012-10/54402">2013高考地理答题思路：地质地形 </a>  下一篇：<a href="/News/2012-10/54404">2013高一化学人教版必修一课件汇总 </a> ';
}