页面漂浮广告代码

    网上的代码非常多，这里是基于javascript和div实现的。供参考。
    将以下代码放在<head></head>之间。
   <SCRIPT language=JavaScript>
// floating image Dreamweaver Extension ,by jet(dezone@sina.com)
var brOK=false;
   var mie=false;
var aver=parseInt(navigator.appVersion.substring(0,1));
var aname=navigator.appName;
//check browser
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=5;
   var vmax=2;
   var vr=2;
   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-8;
   pageY=window.document.body.scrollTop;
   pageH=window.document.body.offsetHeight;
   }
   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+"')",100);
}
}
   function stopme(chipname)
   {if(brOK)
   {//alert(chipname)
   eval("chip="+chipname);
   if(chip.timer1!=null)
  {clearTimeout(chip.timer1)}
}}
   var floater;
function floater()
{checkbrOK();
   floater=new Chip("floater",0,0);
   if(brOK)
   { movechip("floater");
   }}
</SCRIPT>

在body中添加：