使用以下代码只刷新一次
################################################
<div id="aaaa">
<iframe src="http://www.126.com"></iframe>
</div><script language="JavaScript">
setTimeout('aaaa.innerHTML=aaaa.innerHTML',3000);
</script>
################################################
<div id="aaaa">
<iframe src="http://www.126.com"></iframe>
</div><script language="JavaScript">
setTimeout('aaaa.innerHTML=aaaa.innerHTML',3000);
</script>
function abc(){
document.frames["xxx"].location.reload();
}
setInterval("abc()",3000);