<!-- Original:  Philip Winston (pwinston@yahoo.com) -->
<!-- Web Site:  http://members.xoom.com/ebullets -->
<!-- 'Scrolling Fix' by Troels Jakobsen <tjak@get2net.dk> -->
<!-- modified for Firefox by SDC -->

<!-- Begin
var nDots = 7;
var Xpos = 300;
var Ypos = 125;
var px = "px";

var DELTAT = .01;
var SEGLEN = 10;
var SPRINGK = 10;
var MASS = 1;
var GRAVITY = 50;
var RESISTANCE = 10;
var STOPVEL = 0.1;
var STOPACC = 0.1;
var DOTSIZE = 17;
var BOUNCE = 0.75;
var isNetscape = (document.getElementById && !document.all);
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) {
                // 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 + px;
                dots[i].obj.top = dots[i].Y + px;
        }
        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;
        this.obj = document.getElementById("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 + window.pageXOffset;
        Ypos = e.pageY + window.pageYOffset;
        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.body.scrollTop;
                        width = window.innerWidth + document.body.scrollLeft;
                } else {
                        height = document.body.clientHeight + document.documentElement.scrollTop;
                        width = document.body.clientWidth + document.documentElement.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 + px;
                dots[i].obj.top =  dots[i].Y + px;
        }
}
// End -->

