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[i] = new dot(i);

           }

           

           if (!isNetscape) {

           }

           for (i = 0; i < nDots; i++) {

               dots[i].obj.left = dots[i].X;

               dots[i].obj.top = dots[i].Y;

           }

           

           

           if (isNetscape) {

               startanimate();

           } else {

               setTimeout("startanimate()", 500);

           }

       }

       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()", 100);

       }

       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;           

           }

       }