- 弹出层的代码，可以用作广告，可以设置时间自动关闭层，层里面你可以布局表格、图片、列表等内容，空上随你便，主要是想让你了解如何用JavaScript对一个层进行隐藏和显示的功能。
-
<SCRIPT LANGUAGE="JavaScript1.2">adTime=5;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";elseadDiv.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";}onload=initAd;</script>
相关内容推荐