请问各位谁有现成的javascript的脚本,就是广告乱飞的那种+++急+++急+++急

<script LANGUAGE="JavaScript">
var brOK=false;
var mie=false;
var aver=parseInt(navigator.appVersion.substring(0,1));
var aname=navigator.appName;
function checkbrOK()
{if(aname.indexOf("Internet Explorer")!=-1)
   {if(aver>=4) brOK=navigator.javaEnabled();
    mie=true;
   }
 if(aname.indexOf("Netscape")!=-1)
   {if(aver>=4) brOK=navigator.javaEnabled();}
}
var vmin=2;
var vmax=5;
var vr=0.02;
var timer1;
function Chip(chipname,width,height)
{this.named=chipname;
 this.vx=vmin+vmax*Math.random();
 this.vy=vmin+vmax*Math.random();
 this.w=width;
 this.h=height;
 this.xx=0;
 this.yy=0;
 this.timer1=null;
}
function movechip(chipname)
{
 if(brOK)
  {eval("chip="+chipname);
   if(!mie)
    {pageX=window.pageXOffset;
     pageW=window.innerWidth;
     pageY=window.pageYOffset;
     pageH=window.innerHeight;
    }
   else
    {pageX=window.document.body.scrollLeft;
     pageW=window.document.body.offsetWidth-22;
     pageY=window.document.body.scrollTop;
     pageH=window.document.body.offsetHeight-34;
    }   chip.xx=chip.xx+chip.vx;
   chip.yy=chip.yy+chip.vy;   chip.vx+=vr*(Math.random()-0.5);
   chip.vy+=vr*(Math.random()-0.5);
   if(chip.vx>(vmax+vmin))  chip.vx=(vmax+vmin)*2-chip.vx;
   if(chip.vx<(-vmax-vmin)) chip.vx=(-vmax-vmin)*2-chip.vx;
   if(chip.vy>(vmax+vmin))  chip.vy=(vmax+vmin)*2-chip.vy;
   if(chip.vy<(-vmax-vmin)) chip.vy=(-vmax-vmin)*2-chip.vy;
   if(chip.xx<=pageX)
     {chip.xx=pageX;
      chip.vx=vmin+vmax*Math.random();
     }
   if(chip.xx>=pageX+pageW-chip.w)
     {chip.xx=pageX+pageW-chip.w;
      chip.vx=-vmin-vmax*Math.random();
     }
   if(chip.yy<=pageY)
     {chip.yy=pageY;
      chip.vy=vmin+vmax*Math.random();
     }
   if(chip.yy>=pageY+pageH-chip.h)
     {chip.yy=pageY+pageH-chip.h;
      chip.vy=-vmin-vmax*Math.random();
     }   if(!mie)
      {eval('document.'+chip.named+'.top ='+chip.yy);
       eval('document.'+chip.named+'.left='+chip.xx);
      }
   else
      {eval('document.all.'+chip.named+'.style.pixelLeft='+chip.xx);
       eval('document.all.'+chip.named+'.style.pixelTop ='+chip.yy);
      }
   chip.timer1=setTimeout("movechip('"+chip.named+"')",140);
  }
}function hide(chipname){
        if(brOK){
                eval("chip="+chipname);
                if(!mie)
                        eval('document.'+chip.named+'.visibility ='+"'hide'");
                else
                        eval('document.all.'+chip.named+'.style.visibility ='+"'hidden'");
        }
}function stopme(chipname)
{if(brOK)
  {//alert(chipname)
   eval("chip="+chipname);
   if(chip.timer1!=null)
    {clearTimeout(chip.timer1)}
  }
}
var chip1;
function pagestart()
{checkbrOK();
 chip1=new Chip("chip1",117,75);
  if(brOK)
   { movechip("chip1");
    }
}
//if(brOK) {stopme('chip1');}
</script>
<html>
<body>
<div id="chip1"
style="height: 105; position: absolute; visibility: visible; width: 140; left: 180; top: 157"><table border="0" cellPadding="4" cellSpacing="0" class="bd" width="60">
<TBODY>
  <tr>
    <td align="middle" class="bg2"><a class="prs1" href="http://aaa.net" target="_blank"><img
    border="0" class="bd" src="ball.gif" width="50" height="50"></a></td>
  </tr>
</TBODY>
</table>
</div><script event="onload" for="window" language="JavaScript">
pagestart();
</script>
</body>
</html><title>
特效预览 </title> 
<p align="center" style="line-height: 20px"> 
<font color="#666666"><span style="font-size: 9pt">
屏幕上来回弹的篮球
<br/> 
<font face="Arial, Helvetica, sans-serif">Copyright By&nbsp All Right  
Reserved</span></font></p>                                                       
<hr size="1" noshade width="100%" color="red">                                   
<font face="Arial, Helvetica, sans-serif" color="#666666">                       
<p align="center" style="line-height: 20px"></font>