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=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 netease;
  var chip;
  function netease() {
    checkbrOK();
    netease=new Chip("netease",60,80);
    if(brOK) {
      movechip("netease");
    }
  }