Kar yağdırma efekti

<script type="text/javascript"> 
// Copyright 1999,2005 Altan d.o.o.
// Original JavaScript Snow
// E-mail: snow@altan.hr
var no = 10; // snow number
var dx, xp, yp; // coordinate and position variables
var am, stx, sty; // amplitude and step variables
var i, doc_width = 800, doc_height = 600;
doc_width = ********.body.clientWidth;
doc_height = ********.body.clientHeight; 
dx = new Array();
xp = new Array();
yp = new Array();
am = new Array();
stx = new Array();
sty = new Array();



for (i = 0; i < no; ++ i) { 
dx[i] = 0; // set coordinate variables
xp[i] = Math.random()*(doc_width-50); // set position variables
yp[i] = Math.random()*doc_height;
am[i] = Math.random()*20; // set amplitude variables
stx[i] = 0.02 + Math.random()/10; // set step variables
sty[i] = 0.7 + Math.random(); // set step variables
if (i == 0) {
********.write("<div id="dot"+ i +"" style="POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;"><a href="http://inet.hr/"><img src="http://www.altan.hr/snow/dot.gif" border="0"></a></div>");
} else {
********.write("<div id="dot"+ i +"" style="POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;"><img src="http://www.altan.hr/snow/dot.gif" border="0"></div>");
}
}
function snow() {
for (i = 0; i < no; ++ i) { // iterate for every dot
yp[i] += sty[i];
if (yp[i] > doc_height-50) {
xp[i] = Math.random()*(doc_width-am[i]-30);
yp[i] = 0;
stx[i] = 0.02 + Math.random()/10;
sty[i] = 0.7 + Math.random();
doc_width = ********.body.clientWidth;
doc_height = ********.body.clientHeight;
}
dx[i] += stx[i];
********.getElementById("dot"+i).style.top = yp[i];
********.getElementById("dot"+i).style.left = xp[i] + am[i]*Math.sin(dx[i]);
}
setTimeout("snow()", 10);
}
snow();
</script>