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/2012-10/54732">2013高考地理考点整理：大气降水 </a>  下一篇：<a href="/News/2012-10/54734">怎样学习高中物理概念和规律 </a> ';
}