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/2012-4/46490">广东省汕头市澄海中学高二化学课件汇总 </a>  下一篇：<a href="/News/2012-4/46492">2012高考生物专题复习专题课件 </a> ';
}