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/2010-2/18244">各地名校高三物理试题分类汇编 </a>  下一篇：<a href="/News/2010-2/18246">新课标高一英语阅读理解寒假精选专练 </a> ';
}