var nDots = 7;
var Xpos = 0;
var Ypos = 0;
var DELTAT = .01;
var SEGLEN = 10;
var SPRINGK = 10;
var MASS = 1;
var XGRAVITY = 0;
var YGRAVITY = 50;
var RESISTANCE = 10;
var STOPVEL = 0.1;
var STOPACC = 0.1;
var DOTSIZE = 11;
var BOUNCE = 0.75;
var isNetscape = navigator.appName=="Netscape";
var followmouse = true;
var dots = new Array();
init();
function init()
{
 var i = 0;
 for (i = 0; i < nDots; i++) {
 dots[i] = new dot(i);
 }
 if (!isNetscape) {
 }
 for (i = 0; i < nDots; i++) {
 dots[i].obj.left = dots[i].X;
 dots[i].obj.top = dots[i].Y;
 }
 if (isNetscape) {startanimate();} else 
 { setTimeout("startanimate()", 2000);}}
 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;
}
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 + XGRAVITY,
 (spring.Y + resist.Y)/ MASS + YGRAVITY);
 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 + window.pageYOffset;
 width = window.innerWidth + window.pageXOffset;
 } 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;
 }}