Full version: jsB@nk » Pointer » Trailer » Elastic Trail Script
URL: https://www.javascriptbank.com/elastic-trail-script.html
Another mouse trail effect, this one follows the mouse in a whimsical, bouncy manner. Easy to setup, and works cross browser!
Full version: jsB@nk » Pointer » Trailer » Elastic Trail Script
URL: https://www.javascriptbank.com/elastic-trail-script.html
<SCRIPT language=JavaScript><!-- hide code/*Elastic Trail script (By Philip Winston @ [email protected], URL: http://www.geocities.com/pwinston/)Script featured on Dynamicdrive.comFor this and 100's more DHTML scripts, visit http://dynamicdrive.com*/var nDots = 7;var Xpos = 0;var Ypos = 0;var DELTAT = .01;var SEGLEN = 10;var SPRINGK = 10;var MASS = 1;var XGRAVITY = 0;var YGRAVITY = 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()", 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 + XGRAVITY, (spring.Y + resist.Y)/ MASS + YGRAVITY); 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 + window.pageYOffset; width = window.innerWidth + window.pageXOffset; } 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; }}// end code hiding --></SCRIPT><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com--><DIV id=dot0 style="HEIGHT: 11px; POSITION: absolute; VISIBILITY: hidden; WIDTH: 11px"><IMG height=11 src="image1.gif" width=11></DIV><DIV id=dot1 style="HEIGHT: 11px; POSITION: absolute; WIDTH: 11px"><IMG height=11 src="image1.gif" width=11></DIV><DIV id=dot2 style="HEIGHT: 11px; POSITION: absolute; WIDTH: 11px"><IMG height=11 src="image1.gif" width=11></DIV><DIV id=dot3 style="HEIGHT: 11px; POSITION: absolute; WIDTH: 11px"><IMG height=11 src="image1.gif" width=11></DIV><DIV id=dot4 style="HEIGHT: 11px; POSITION: absolute; WIDTH: 11px"><IMG height=11 src="image1.gif" width=11></DIV><DIV id=dot5 style="HEIGHT: 11px; POSITION: absolute; WIDTH: 11px"><IMG height=11 src="image1.gif" width=11></DIV><DIV id=dot6 style="HEIGHT: 11px; POSITION: absolute; WIDTH: 11px"><IMG height=11 src="image1.gif" width=11></DIV><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->
http://javascriptbank.com/javascript/mouse/image1.gif