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/2008-10/6714">历史同步课后及时练 </a>  下一篇：<a href="/News/2008-10/6716">不能不看的语数外冲关技巧 </a> ';
}