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/2018-9/166826">2018-2019版物理新课堂学案选修3-5人教版课件+检测 </a>  下一篇：<a href="/News/2018-9/166828">2018-2019版物理新课堂学案人教全国通用版选修3-3课件+练习 </a> ';
}