JS实现5秒钟自动关闭的div广告层

浏览数：29 / 时间：2015年06月09日

<html>
    <head>
    <title>JS实现5秒钟自动关闭的div广告层丨礼堂座椅丨轻质隔墙板</title>
    <style type="text/css">
    <!--
    #sponsorAdDiv {position:absolute; height:1; width:1; top:0; left:0;}
    -->
    </style>
    </head>
    <body>
    <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";
    else
    adDiv.visibility ="hide";
    }
    onload=initAd;
    </script>
    <div id="sponsorAdDiv" style="visibility:hidden">
    <table width="450" height="350" bgcolor="008000"><tr><td>
    <table width="445" height="345" bgcolor="F0FFF0"><tr><td>
    <center>welcome to www.CsrCode.cn!<BR><BR>这个窗口将在5秒后自动关闭</center>
    </td></tr></table></td></tr></table></div>
    </body>
    </html>
    <br><br><hr>