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/2017-5/143841">高二历史岳麓版选修2每课一练 </a>  下一篇：<a href="/News/2017-5/143843">山东省锦泽技工学校2016-2017学年高二下学期期中考试 </a> ';
}