ad_1.innerHTML不兼容火狐的修改

ad_1.innerHTML=ad_11.innerHTML;ad_11.innerHTML="";

document.getElementById("ad_1").innerHTML=document.getElementById("ad_11").innerHTML;document.getElementById("ad_11").innerHTML="";

例如：

<SCRIPT>ad_1.innerHTML=ad_11.innerHTML;ad_11.innerHTML="";</SCRIPT>

<SCRIPT>document.getElementById("ad_1").innerHTML=document.getElementById("ad_11").innerHTML;document.getElementById("ad_11").innerHTML="";</SCRIPT>