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/2017-7/146793">2017-2018学年粤教版物理选修3-2检测 </a>  下一篇：<a href="/News/2017-7/146795">2017-2018学年粤教版高中物理选修3-1课件 </a> ';
}