window.onload=movebutton;
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) 
	 {
		var object = document.getElementById(chip.named);
		if (object != null)
		{
			object.style.top  = chip.yy;
			object.style.left = chip.xx;
		}
     // 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);  
		   var object = document.getElementById(chip.named);
		if (object != null)
		{
			object.style.top  = chip.yy;
			object.style.left = chip.xx;
		}
      } 
   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 movebutton;
var chip;
function movebutton(){
  checkbrOK();
  movebutton=new Chip("movebutton",60,80);
  if(brOK){ movechip("movebutton"); }
}