var nDots;
var Xpos = 0;
var Ypos = 0;
var Alert=false;
var DELTAT;
var SEGLEN;
var SPRINGK;
var MASS;
var GRAVITY;
var RESISTANCE;
var STOPVEL;
var STOPACC;
var DOTSIZE = 12;
var BOUNCE;
var isNetscape = navigator.appName=="Netscape";
var followmouse = true;
var dots = new Array();
var d=new Date();
d.setTime(d.getTime()+(1000*60*60*24*90));

function reset(){
if (nDots==1)
{
d.setTime(d.getTime()-1000);
}
else
nDots=12;
document.cookie="TomarDots=("+nDots.toString()+");expires="+d.toGMTString();
if (Alert==true){
Cookies=document.cookie
alert("Erase 3D-Dots="+nDots+" !!!");
alert("Cookies="+Cookies+" !!!");
}
}

function dotsCookie()
{
	var Cookies;
	Cookies=document.cookie
	if (Alert==true){
	alert("Cookies="+Cookies+" !!!")
	}
	if(Cookies.indexOf("TomarDots")!=-1)
	{		
	var DotStart=Cookies.indexOf('(')+1;
	var DotEnd=Cookies.indexOf(')');
	nDots=parseInt(Cookies.substring(DotStart,DotEnd)); 
	if (nDots>60)
	nDots=60;
		if (Alert==true){
		alert("Load 3D-Dots="+nDots+" !!!");
		}
	}
	else
	{
	nDots=12;
	document.cookie="TomarDots=("+nDots.toString()+");expires="+d.toGMTString();
		if (Alert==true){
		alert("Load 3D-Dots="+nDots+" !!!");
		}
	}
}
function resetDots() {
if (nDots==null)
{
dotsCookie();
} else {
nDots=document.Dots.selectedDots.value;
document.cookie="TomarDots=("+nDots.toString()+");expires="+d.toGMTString();
}
	if (Alert==true){
	alert("Reset 3D-Dots="+nDots+" !!!");
	}


 if (nDots<=1 || nDots>100 || nDots==null){
reset();
}

DotsCSS.innerHTML="";
SPRINGK=SEGLEN=RESISTANCE=1;
GRAVITY=1;
MASS=1;
BOUNCE=1;
STOPVEL=STOPACC=.001;
setDots(nDots);
}

function setDots(nDots) {
RESISTANCE=1+Math.round(nDots/25);
SPRINGK=RESISTANCE*.9;
SEGLEN=SPRINGK*1.25;
MASS=1+Math.round(nDots/5)*.1;
GRAVITY=2.5*Math.round(nDots/5);
DELTAT=nDots*.0005;
BOUNCE=MASS*.05+1.2;
STOPVEL=nDots*.00025;
STOPACC=nDots*.005;
var i = 0;
if (document.Dots.Phisics.checked==true)
{
DotsPhisics.innerHTML=
'<table WIDTH="100%" BORDER="0" CELLSPACING="0" CELLPADDING="10" align=center>'
+'<tr><td valign="middle" align="right" width=50%>'
+"<b>Numbet of Dots</b>"
+'</td><td valign="middle" align="left" width=50%>'
+"<b>"+(nDots-1)+"</b>"
+'</tr><tr><td valign="middle" align="right" width=50%>'
+"<b>Dot Mass</b>"
+'</td><td valign="middle" align="left" width=50%>'
+"<b>"+MASS+"</b>"
+'</tr><tr><td valign="middle" align="right" width=50%>'
+"<b>Dot Stop at Velocity</b>"
+'</td><td valign="middle" align="left" width=50%>'
+"<b>"+STOPVEL+"</b>"
+'</tr><tr><td valign="middle" align="right" width=50%>'
+"<b>Dot Stop at Acceleration</b>"
+'</td><td valign="middle" align="left" width=50%>'
+"<b>"+STOPACC+"</b>"
+'</tr><tr><td valign="middle" align="right" width=50%>'
+"<b>Spring Elasticity</b>"
+'</td><td valign="middle" align="left" width=50%>'
+"<b>"+SPRINGK+"</b>"
+'</tr><tr><td valign="middle" align="right" width=50%>'
+"<b>Spring Resistance</b>"
+'</td><td valign="middle" align="left" width=50%>'
+"<b>"+RESISTANCE+"</b>"
+'</tr><tr><td valign="middle" align="right" width=50%>'
+"<b>Seglen</b>"
+'</td><td valign="middle" align="left" width=50%>'
+"<b>"+SEGLEN+"</b>"
+'</tr><tr><td valign="middle" align="right" width=50%>'
+"<b>Dots Bounce</b>"
+'</td><td valign="middle" align="left" width=50%>'
+"<b>"+BOUNCE+"</b>"
+'</tr><tr><td valign="middle" align="right" width=50%>'
+"<b>World Gravity</b>"
+'</td><td valign="middle" align="left" width=50%>'
+"<b>"+GRAVITY+"</b>"
+'</tr><tr><td valign="middle" align="right" width=50%>'
+"<b>Delta Time</b>"
+'</td><td valign="middle" align="left" width=50%>'
+"<b>"+DELTAT+"</b>"
+"</tr></table>"
;
}
else
DotsPhisics.innerHTML="";
useForm=false;
DotsCSS.innerHTML+="<div id='dot0' style='position: absolute; visibility: hidden; height: 12; width: 12;'/><dd/><img src='../Images/ball12.gif' height='12' width='12'/></dd/></div/>";
for (i = 1; i < nDots; i++) {
DotsCSS.innerHTML+="<div id='dot"+i+"' style='position: absolute; height: 12; width: 12;'><dd><img src='../Images/ball12.gif' height='12' width='12' ></dd></div>";
}
for (i = 0; i < nDots; i++) 
dots[i] = new dot(i);

if (!isNetscape) {
// I only know how to read the locations of the 
// <LI> items in IE
//skip this for now
// setInitPositions(dots)
}
for (i = 0; i < nDots; i++) {
dots[i].obj.left = dots[i].X;
dots[i].obj.top = dots[i].Y;
}
if (isNetscape) {
startanimate();
} else {
// let dots sit there for a few seconds
// since they're hiding on the real bullets
setTimeout("startanimate()", 3000);
   }
}
function dot(i) {
this.X = Xpos;
this.Y = Ypos;
this.dx = 0;
this.dy = 0;
if (isNetscape) {	
this.obj = eval("document.dot" + i);
} else {
this.obj = eval("dot" + i + ".style");
   }
}
function startanimate() {	
setInterval("animate()", 20);
}
function setInitPositions(dots) {
var startloc = document.all.tags("LI");
var i = 0;
for (i = 0; i < startloc.length && i < (nDots - 1); i++) {
dots[i+1].X = startloc[i].offsetLeft
startloc[i].offsetParent.offsetLeft - DOTSIZE;
dots[i+1].Y = startloc[i].offsetTop +
startloc[i].offsetParent.offsetTop + 2*DOTSIZE;
}
dots[0].X = dots[1].X;
dots[0].Y = dots[1].Y - SEGLEN;
}
function MoveHandler(e) {
Xpos = e.pageX;
Ypos = e.pageY;	  
return true;
}
function MoveHandlerIE() {
Xpos = window.event.x + document.body.scrollLeft;
Ypos = window.event.y + document.body.scrollTop;	  
}
if (isNetscape) {
document.captureEvents(Event.MOUSEMOVE);
document.onMouseMove = MoveHandler;
} else {
document.onmousemove = MoveHandlerIE;
}
function vec(X, Y)
{
this.X = X;
this.Y = Y;
}

// adds force in X and Y to spring for dot[i] on dot[j]
function springForce(i, j, spring)
{
var dx = (dots[i].X - dots[j].X);
var dy = (dots[i].Y - dots[j].Y);
var len = Math.sqrt(dx*dx + dy*dy);
if (len > SEGLEN) {
var springF = SPRINGK * (len - SEGLEN);
spring.X += (dx / len) * springF;
spring.Y += (dy / len) * springF;
   }
}
function animate() {
var start = 0;
if (followmouse) {
dots[0].X = Xpos;
dots[0].Y = Ypos;	
start = 1;
}
for (i = start ; i < nDots; i++ ) {
var spring = new vec(0, 0);
if (i > 0) {
springForce(i-1, i, spring);
}
if (i < (nDots - 1)) {
springForce(i+1, i, spring);
}
var resist = new vec(-dots[i].dx * RESISTANCE, -dots[i].dy * RESISTANCE);
var accel = new vec((spring.X + resist.X)/ MASS, (spring.Y + resist.Y)/ MASS + GRAVITY);
dots[i].dx += (DELTAT * accel.X);
dots[i].dy += (DELTAT * accel.Y);
if (Math.abs(dots[i].dx) < STOPVEL &&
Math.abs(dots[i].dy) < STOPVEL &&
Math.abs(accel.X) < STOPACC &&
Math.abs(accel.Y) < STOPACC) {
dots[i].dx = 0;
dots[i].dy = 0;
}
dots[i].X += dots[i].dx;
dots[i].Y += dots[i].dy;
var height, width;
if (isNetscape) {
height = window.innerHeight + document.scrollTop;
width = window.innerWidth + document.scrollLeft;
} else {	
height = document.body.clientHeight + document.body.scrollTop;
width = document.body.clientWidth + document.body.scrollLeft;
}
if (dots[i].Y >=  height - DOTSIZE - 1) {
if (dots[i].dy > 0) {
dots[i].dy = BOUNCE * -dots[i].dy;
}
dots[i].Y = height - DOTSIZE - 1;
}
if (dots[i].X >= width - DOTSIZE) {
if (dots[i].dx > 0) {
dots[i].dx = BOUNCE * -dots[i].dx;
}
dots[i].X = width - DOTSIZE - 1;
}
if (dots[i].X < 0) {
if (dots[i].dx < 0) {
dots[i].dx = BOUNCE * -dots[i].dx;
}
dots[i].X = 0;
}
dots[i].obj.left = dots[i].X;			
dots[i].obj.top =  dots[i].Y;		
   }
}