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/2010-3/19754">新人教必修3语文同步大课堂 </a>  下一篇：<a href="/News/2010-3/19756">2010届高三第二轮化学专题复习 </a> ';
}