Elastic Bouncing Pumpkins Trail - Haloween Lanterns

Elastic Bouncing Pumpkins

Have your balls bounce and swing on your web page by using this script.
Easy to install just copy and paste into the BODY of your HTML page.

You need to save this ball image for this script.
Right click and Save as... pumpkin.gif -> -> ->

<- <- <-

Example:

Other
Examples
Click an image:

Waggle your mouse pointer and
Watch your pumpkins bounce and swing.

Browser Compatibility: FF - IE - NN - O
Elastic Balls

Footballs

Follow the editing instructions after the // and within the 
to customize the script, then copy and paste it into your HTML editor.

<!-- Begin
var nDots = 7;
if (document.all&&window.print)
document.body.style.cssText="overflow-x:hidden;overflow-y:scroll"
var Xpos = 0;
var Ypos = 0;

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 = 35;
var BOUNCE = 0.75;

var isNetscape = navigator.appName=="Netscape";

var followmouse = true;

function dot(i) 
{
    this.X = Xpos;
    this.Y = Ypos;
    this.dx = 0;
    this.dy = 0;
    this.obj = eval("document.getElementById('dot" + i + "').style");
}

document.onmousemove = MoveHandler;

function startanimate() {	
    setInterval("animate()", 20);
}

function MoveHandler(e) {

if (!e) {
		Xpos = window.event.x + document.body.scrollLeft;
		Ypos = window.event.y + document.body.scrollTop;
	} else {
		Xpos = e.pageX;
		Ypos = e.pageY;
	}
}

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;
    }
}

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 + "px";
        dots[i].obj.top =  dots[i].Y + "px";
    }
}
// End -->
</SCRIPT>