<!-- Original: Philip Winston
(
[email protected]) --> <!-- Web Site: http://members.xoom.com/ebullets
--> <!-- ´Scrolling Fix´ by Troels Jakobsen <
[email protected]> -->
<!-- Distributed by http://www.hypergurl.com --> <!-- Permission granted
to use the script if above is left intact --> <!-- Begin var nDots = 7;
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 = 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<em> = new dot(i); } if (!isNetscape)
{ // I only know how to read the locations of the // items in IE //skip
this for now // setInitPositions(dots) } for (i = 0; i < nDots; i++) { dots
.obj.left
= dots.X; dots.obj.top = dots.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.offsetLeft startloc.offsetParent.offsetLeft - DOTSIZE;
dots[i+1].Y = startloc.offsetTop + startloc.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 on
dot[j] function springForce(i, j, spring) { var dx = (dots.X - dots[j].X);
var dy = (dots.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.dx * RESISTANCE, -dots.dy * RESISTANCE); var accel = new
vec((spring.X + resist.X)/ MASS, (spring.Y + resist.Y)/ MASS + GRAVITY); dots.dx
+= (DELTAT * accel.X); dots.dy += (DELTAT * accel.Y); if (Math.abs(dots.dx)
< STOPVEL && Math.abs(dots.dy) < STOPVEL && Math.abs(accel.X)
< STOPACC && Math.abs(accel.Y) < STOPACC) { dots.dx = 0; dots.dy
= 0; } dots.X += dots.dx; dots.Y += dots.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.Y
>= height - DOTSIZE - 1) { if (dots.dy > 0) { dots.dy = BOUNCE * -dots.dy;
} dots.Y = height - DOTSIZE - 1; } if (dots.X >= width - DOTSIZE) { if
(dots.dx > 0) { dots.dx = BOUNCE * -dots.dx; } dots.X = width -
DOTSIZE - 1; } if (dots.X < 0) { if (dots.dx < 0) { dots.dx = BOUNCE
* -dots.dx; } dots.X = 0; } dots.obj.left = dots.X; dots.obj.top
= dots.Y; } } // End -->
