var brOK1=false;
var mie=false;
var aver=parseInt(navigator.appVersion.substring(0,1));
var aname=navigator.appName;

function checkbrOK1()
{if(aname.indexOf("Internet Explorer")!=-1)
{if(aver>=4) brOK1=navigator.javaEnabled();
mie=true;
}
if(aname.indexOf("Netscape")!=-1)  

{if(aver>=4) brOK1=navigator.javaEnabled();}
}

var vmin=2;
var vmax=5;
var vr=2;
var timer1;

function ChipR(ChipRname,width,height)
{this.named=ChipRname;
this.vx=vmin+vmax*Math.random();
this.vy=vmin+vmax*Math.random();
this.w=width;
this.h=height;
this.xx=700;
this.yy=0;
this.timer1=null;
}

function moveChipR(ChipRname)
{
if(brOK1)
{eval("ChipR="+ChipRname);
if(!mie)
{pageXR=window.pageXROffset;
pageW=window.innerWidth;
pageY=window.pageYOffset;
pageH=window.innerHeight;
}
else
{pageXR=window.document.body.scrollLeft;
pageW=window.document.body.offsetWidth-8;
pageY=window.document.body.scrollTop;
pageH=window.document.body.offsetHeight;
} 
ChipR.xx=ChipR.xx+ChipR.vx;
ChipR.yy=ChipR.yy+ChipR.vy;
ChipR.vx+=vr*(Math.random()-0.5);
ChipR.vy+=vr*(Math.random()-0.5);
if(ChipR.vx>(vmax+vmin))  ChipR.vx=(vmax+vmin)*2-ChipR.vx;
if(ChipR.vx<(-vmax-vmin)) ChipR.vx=(-vmax-vmin)*2-ChipR.vx;
if(ChipR.vy>(vmax+vmin))  ChipR.vy=(vmax+vmin)*2-ChipR.vy;
if(ChipR.vy<(-vmax-vmin)) ChipR.vy=(-vmax-vmin)*2-ChipR.vy;
if(ChipR.xx<=pageXR)
{ChipR.xx=pageXR;
ChipR.vx=vmin+vmax*Math.random();
}
if(ChipR.xx>=pageXR+pageW-ChipR.w)
{ChipR.xx=pageXR+pageW-ChipR.w;
ChipR.vx=-vmin-vmax*Math.random();
}
if(ChipR.yy<=pageY)
{ChipR.yy=pageY;
ChipR.vy=vmin+vmax*Math.random();
}
if(ChipR.yy>=pageY+pageH-ChipR.h)
{ChipR.yy=pageY+pageH-ChipR.h;
ChipR.vy=-vmin-vmax*Math.random();
}
if(!mie)
{eval('document.'+ChipR.named+'.top ='+ChipR.yy);
eval('document.'+ChipR.named+'.left='+ChipR.xx);
} 
else
{eval('document.all.'+ChipR.named+'.style.pixelLeft='+ChipR.xx);
eval('document.all.'+ChipR.named+'.style.pixelTop ='+ChipR.yy); 
}
ChipR.timer1=setTimeout("moveChipR('"+ChipR.named+"')",100);
}
}

var flyyjy;
var ChipR;
var flyyjy1;
var ChipR1;
checkbrOK1(); 


flyyjy=new ChipR("flyyjy",100,100);
if(brOK1) 
{ moveChipR("flyyjy");
}