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/2012-7/51141">沪教版高一政治 课件 汇编 </a>  下一篇：<a href="/News/2012-7/51143">高中地理地球的宇宙环境资料汇总 </a> ';
}