// Moving Objects Script
// By Virtual_Max
// 
// Permission to use, copy, modify, and distribute this software and its documentation 
// for NON-COMMERCIAL purposes and  without fee is hereby granted provided that this 
// notice appears in all copies. 
//
// VIRTUAL MAX MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE 
// SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED 
// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR 
// NON-INFRINGEMENT. VIRTUAL MAX SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY 
// LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR 
// ITS DERIVATIVES.
	
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();
		}
	}
 	if( aname.indexOf("Opera") != -1 )
	{
		brOK = navigator.javaEnabled();
	}
	
}

var vmin=25;
var vmax=40;
var vr=80;
var timer1;

var chip;

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 )
		{
//			alert("top b4=" + document.getElementById(chip.named).style.top + " : add" + chip.yy);
			document.getElementById(chip.named).style.top  =+ chip.yy;
			document.getElementById(chip.named).style.left =+ chip.xx;
//			alert("top af=" + document.getElementById(chip.named).top);
		} 
		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 )
	{
		eval("chip="+chipname);
		
		if( chip.timer1 != null )
		{
			clearTimeout(chip.timer1)
		}
	}
}