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float ad浮动广告代码

发布：dxy 字体：[增加减小] 类型：转载

点击运行可以看到效果:

<html>
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 
<meta name="GENERATOR" content="Microsoft FrontPage 4.0"> 
<meta name="ProgId" content="FrontPage.Editor.Document"> 
<title>New Page 1</title> 
<script language="javascript"> 
   var isRight=true; 
   var isDown=true; 
   function init() 
   { 
      float(); 
   } 
    
   function float() 
   { 
      var top_u=parseInt(document.body.offsetHeight)-parseInt($("ad").style.height);; 
      var top_l=0; 
      var left_u=parseInt(document.body.offsetWidth)-parseInt($("ad").style.width); 
      var left_l=0; 
      var mx=+parseInt(Math.random()*10); 
      var my=+parseInt(Math.random()*10); 
       
      if(parseInt($("ad").style.left)<parseInt(document.body.scrollLeft)) 
      { 
         isRight=true; 
      } 
      else if(parseInt($("ad").style.left)>parseInt(document.body.scrollLeft)+left_u) 
      { 
         isRight=false; 
      } 
      if(parseInt($("ad").style.top)<=parseInt(document.body.scrollTop)) 
      { 
         isDown=true; 
      } 
      else if(parseInt($("ad").style.top)>parseInt(document.body.scrollTop)+top_u) 
      { 
         isDown=false; 
      } 
      mx=isRight?mx:0-mx; 
      my=isDown?my:0-my; 
      $("ad").style.left=parseInt($("ad").style.left)+mx; 
      $("ad").style.top=parseInt($("ad").style.top)+my; 
      setTimeout("float()",50)       
   } 
    
   function $(id) 
   { 
      return document.getElementById(id) 
   } 
    
   function ind(str,s) 
   { 
      document.body.insertAdjacentHTML("BeforeEnd",str+s); 
   } 
</script> 
</head margin=0>

</body>
</html>

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]