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=480;

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');}