Tutorial JavaScript - Noise di Mouse

Script letakkan di body

<SCRIPT language=JavaScript>
<!--

/*
Dancing Stars cursor (Submitted by J4mbi H4ck3r)
Modified and permission granted to Dynamic Drive to feature script in archive
For full source, usage terms, and 100's more DHTML scripts, visit http://dynamicdrive.com
*/

if (document.all){
document.write('<div id="starsDiv" style="position:absolute;top:0px;left:0px">')
for (xy=0;xy<7;xy++)
document.write('<div style="position:relative;width:3px;height:3px;background:#DBDBDB;font-size:2px;visibility:visible"></div>')
document.write('</div>')
}

if (document.layers)
{window.captureEvents(Event.MOUSEMOVE);}
var yBase = 200;
var xBase = 200;
var yAmpl = 10;
var yMax = 40;
var step = .2;
var ystep = .5;
var currStep = 0;
var tAmpl=1;
var Xpos = 1;
var Ypos = 1;
var i = 0;
var j = 0;

if (document.all)
{
  function MoveHandler(){
  Xpos = document.body.scrollLeft+event.x;
  Ypos = document.body.scrollTop+event.y;
  }
  document.onmousemove = MoveHandler;
}

else if (document.layers)
{
  function xMoveHandler(evnt){
  Xpos = evnt.pageX;
  Ypos = evnt.pageY;
  }
  window.onMouseMove = xMoveHandler;
}



function animateLogo() {
if (document.all)
{
 yBase = window.document.body.offsetHeight/4;
 xBase = window.document.body.offsetWidth/4;
}
else if (document.layers)
{
 yBase = window.innerHeight/4 ;
 xBase = window.innerWidth/4;
}

if (document.all)
{
var totaldivs=document.all.starsDiv.all.length
 for ( i = 0 ; i < totaldivs ; i++ )
 {
var tempdiv=document.all.starsDiv.all[i].style
  tempdiv.top = Ypos + Math.cos((20*Math.sin(currStep/20))+i*70)*yBase*(Math.sin(10+currStep/10)+0.2)*Math.cos((currStep + i*25)/10);
  tempdiv.left = Xpos + Math.sin((20*Math.sin(currStep/20))+i*70)*xBase*(Math.sin(10+currStep/10)+0.2)*Math.cos((currStep + i*25)/10);
 }
}

else if (document.layers)
{
 for ( j = 0 ; j < 7 ; j++ )
 {
var templayer="a"+j
  document.layers[templayer].top = Ypos + Math.cos((20*Math.sin(currStep/20))+j*70)*yBase*(Math.sin(10+currStep/10)+0.2)*Math.cos((currStep + j*25)/10);
  document.layers[templayer].left =Xpos + Math.sin((20*Math.sin(currStep/20))+j*70)*xBase*(Math.sin(10+currStep/10)+0.2)*Math.cos((currStep + j*25)/10);
 }
}
currStep += step;
setTimeout("animateLogo()", 15);
}
animateLogo();
// -->
</SCRIPT>