开启页面一段时间自动关闭广告的代码

开启页面一段时间自动关闭广告的代码:

 

<SCRIPT LANGUAGE="JavaScript1.2">adTime=5; //关闭窗口等待的时间

chanceAd=1;var ns=(document.layers);var ie=(document.all);var w3=(document.getElementById && !ie);adCount=0;function initAd(){        if(!ns && !ie && !w3) return;        if(ie)                adDiv=eval('document.all.sponsorAdDiv.style');        else if(ns)        adDiv=eval('document.layers["sponsorAdDiv"]');        else if(w3)        adDiv=eval('document.getElementById("sponsorAdDiv").style');        randAd=Math.ceil(Math.random()*chanceAd);        if (ie||w3)        adDiv.visibility="visible";        else        adDiv.visibility ="show";        if(randAd==1) showAd();}function showAd(){if(adCount<adTime*10){adCount+=1;        if (ie){documentWidth =document.body.offsetWidth/2+document.body.scrollLeft-20;        documentHeight =document.body.offsetHeight/2+document.body.scrollTop-20;}        else if (ns){documentWidth=window.innerWidth/2+window.pageXOffset-20;        documentHeight=window.innerHeight/2+window.pageYOffset-20;}        else if (w3){documentWidth=self.innerWidth/2+window.pageXOffset-20;        documentHeight=self.innerHeight/2+window.pageYOffset-20;}        adDiv.left=documentWidth-200;adDiv.top =documentHeight-200;        setTimeout("showAd()",100);}else closeAd();}function closeAd(){if (ie||w3)adDiv.display="none";elseadDiv.visibility ="hide";}οnlοad=initAd;</script><div id="sponsorAdDiv" style="visibility:hidden" align="center">

<!--广告内容，可以是图片或FLASH--> <img src="http://www.szlg.net/UploadFiles/2011-02/admin/2011.png" /></div>

 

如果是FLASH，将上面图片换成FLASH的代码即可。