慢慢展开再慢慢收起的javascript广告效果_广告代码

时间：2020-11-27 来源：乌哈旅游

<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>脚本之家 效果代码</title> 
<style> 
*{margin:0;padding:0;} 
body {height:2000px;} 
#menu { 
 width:220px; 
 height:420px; 
 position:absolute; 
 z-index:1000; 
 background:url(/upload/20080421090108362.gif) repeat-x top left; 
} 
#menu_h { 
 float:right; 
} 
#menu_h img { 
 cursor:pointer; 
} 
#menu_c { 
 width:188px; 
 height:398px; 
 border:1px solid #666; 
 background:#ecf6f5; 
 margin:12px 0 0 5px; 
} 
#menu_c h2 { 
 text-align:center; 
} 
</style> 
</head> 
<body> 
 
<script type="text/javascript"> 
var time = 300; 
var h = 0; 
function addCount() 
{ 
 if(time>0) 
 { 
 time--; 
 h = h+5; 
 } 
 else 
 { 
 return; 
 } 
 if(h>300) //高度 
 { 
 return; 
 } 
 document.getElementById("ads").style.display = ""; 
 document.getElementById("ads").style.height = h+"px"; 
 setTimeout("addCount()",30); 
} 
window.onload = function showAds() 
{ 
 addCount(); 
 setTimeout("noneAds()",7000); //停留时间自己调了 
} 
var T = 300; 
var N = 300; //高度 
function noneAds() 
{ 
 if(T>0) 
 { 
 T--; 
 N = N-5; 
 } 
 else 
 { 
 return; 
 } 
 if(N<0) 
 { 
 document.getElementById("ads").style.display = "none"; 
 return; 
 } 
 document.getElementById("ads").style.height = N+"px"; 
 setTimeout("noneAds()",30); 
} 
</ script> 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]