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 = 20;
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 = -188;dots[i].obj.top = dots[i].Y;}    
 if (isNetscape) {startanimate();} else {setTimeout("startanimate()", 1000);}}
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,
            (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.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;			
        dots[i].obj.top =  dots[i].Y;}}
        //LiuJg.BiuBiu last modi 2002.08.17  http://www.TrueMe.net