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/2012-9/53521">用案例法复习等值线 </a>  下一篇：<a href="/News/2012-9/53523">如何增强高考信心 名师分享七步法 </a> ';
}