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/2019-11/179493">2020版浙江选考化学大二轮复习课件+讲义+练习 </a>  下一篇：<a href="/News/2019-11/179495">2020版浙江选考历史大三轮复习练习 </a> ';
}