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/2009-2/10543">高三化学实验专题复习课件 </a>  下一篇：<a href="/News/2009-2/10545">2009届高三物理考点透视 </a> ';
}