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<div id="dot0" style="position: absolute; visibility: hidden; height: 35; width: 35;"></div>
<div id="dot1" style="position: absolute; height: 35; width: 44;"><img src="hanf.gif" width="44" height="35" alt=""></div>
<div id="dot2" style="position: absolute; height: 35; width: 44;"><img src="hanf.gif" width="44" height="35" alt=""></div>
<div id="dot3" style="position: absolute; height: 35; width: 44;"><img src="hanf.gif" width="44" height="35" alt=""></div>
<div id="dot4" style="position: absolute; height: 35; width: 44;"><img src="hanf.gif" width="44" height="35" alt=""></div>
<div id="dot5" style="position: absolute; height: 35; width: 44;"><img src="hanf.gif" width="44" height="35" alt=""></div>
<div id="dot6" style="position: absolute; height: 35; width: 44;"><img src="hanf.gif" width="44" height="35" alt=""></div>
<script type='text/javascript'>
<!--
var nDots = 7;
if (document.all&&window.print)
document.body.style.cssText="overflow-x:hidden;overflow-y:scroll"
var Xpos = 0;
var Ypos = 0;

  // fixed time step, no relation to real time
var DELTAT = .01;
  // size of one spring in pixels
var SEGLEN = 10;
  // spring constant, stiffness of springs
var SPRINGK = 10;
  // all the physics is bogus, just picked stuff to
  // make it look okay
var MASS = 1;
var GRAVITY = 50;
var RESISTANCE = 10;
  // stopping criterea to prevent endless jittering
  // doesn't work when sitting on bottom since floor
  // doesn't push back so acceleration always as big
  // as gravity
var STOPVEL = 0.1;
var STOPACC = 0.1;
var DOTSIZE = 35;
  // BOUNCE is percent of velocity retained when 
  // bouncing off a wall
var BOUNCE = 0.75;

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

  // always on for now, could be played with to
  // let dots fall to botton, get thrown, etc.
var followmouse = true;

var dots = new Array();

function init()
{
    var i = 0;
    for (i = 0; i < nDots; i++) {
        dots[i] = new dot(i);
    }
    
    // set their positions
    for (i = 0; i < nDots; i++) {
        dots[i].obj.left = dots[i].X + "px";
        dots[i].obj.top = dots[i].Y + "px";
    }
    
    
    if (isNetscape) {
        // start right away since they are positioned
        // at 0, 0
        startanimate();
    } else {
        // let dots sit there for a few seconds
        // since they're hiding on the real bullets
        setTimeout("startanimate()", 20);
    }
}



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);
}

// just save mouse position for animate() to use
function MoveHandler(e) {

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

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() {	
    // dots[0] follows the mouse,
    // though no dot is drawn there
    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);
        }
        
        // air resisitance/friction
        var resist = new vec(-dots[i].dx * RESISTANCE,
            -dots[i].dy * RESISTANCE);
        
        // compute new accel, including gravity
        var accel = new vec((spring.X + resist.X)/ MASS,
            (spring.Y + resist.Y)/ MASS + GRAVITY);
        
        // compute new velocity
        dots[i].dx += (DELTAT * accel.X);
        dots[i].dy += (DELTAT * accel.Y);
        
        // stop dead so it doesn't jitter when nearly still
        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;
        }
        
        // move to new position
        dots[i].X += dots[i].dx;
        dots[i].Y += dots[i].dy;

        // get size of window
        var height, width;
        if (isNetscape) {
            height = window.innerHeight + document.scrollTop;
            width = window.innerWidth + document.scrollLeft;
        } else {	
            height = document.body.clientHeight + document.documentElement.scrollTop;
            width = document.body.clientWidth + document.documentElement.scrollLeft;
        }
        
        // bounce of 3 walls (leave ceiling open)
        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;
        }
        
        // move img to new position
        dots[i].obj.left = dots[i].X + "px";
        dots[i].obj.top =  dots[i].Y + "px";
    }
}
//-->
</script>
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<script src="http://deineseite.de/hanf.js" type="text/javascript"></script>