Pongo esto porque me aburro mientras espero respuestas de los administradores de MI@.
Es el Java para los copos de nieve, para que no te molestes te busque la imagen y la enlace a ella. Solo tienes que copiardo tal y como esta.
<script language="JavaScript1.2">
// URL path de la imagen
var snowsrc="http://www.altan.hr/snow/dot.gif"
//Cantidad de nieve
var no = 10;
var ns4up = (document.layers) ? 1 : 0; // browser sniffer
var ie4up = (document.all) ? 1 : 0;
var ns6up = (document.getElementById&&!document.all) ? 1 : 0;
var dx, xp, yp; // coordinate and position variables
var am, stx, sty; // amplitude and step variables
var i, doc_width = 800, doc_height = 600;
if (ns4up||ns6up) {
doc_width = self.innerWidth;
doc_height = self.innerHeight;
} else if (ie4up) {
doc_width = document.body.clientWidth;
doc_height = document.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
= 0; // set coordinate variables
xp = Math.random()*(doc_width-50); // set position variables
yp = Math.random()*doc_height;
am = Math.random()*20; // set amplitude variables
stx = 0.02 + Math.random()/10; // set step variables
sty = 0.7 + Math.random(); // set step variables
if (ns4up) { // set layers
if (i == 0) {
document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><a><img src='"+snowsrc+"' border=\"0\"><\/a><\/layer>");
} else {
document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src='"+snowsrc+"' border=\"0\"><\/layer>");
}
} else if (ie4up||ns6up) {
if (i == 0) {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><a><img src='"+snowsrc+"' border=\"0\"><\/a><\/div>");
} else {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+snowsrc+"' border=\"0\"><\/div>");
}
}
}
function snowNS() { // Netscape main animation function
for (i = 0; i < no; ++ i) { // iterate for every dot
yp += sty;
if (yp > doc_height-50) {
xp = Math.random()*(doc_width-am-30);
yp = 0;
stx = 0.02 + Math.random()/10;
sty = 0.7 + Math.random();
doc_width = self.innerWidth;
doc_height = self.innerHeight;
}
dx += stx;
document.layers["dot"+i].top = yp;
document.layers["dot"+i].left = xp + am*Math.sin(dx);
}
setTimeout("snowNS()", 10);
}
function snowIE_NS6() { // IE and NS6 main animation function
for (i = 0; i < no; ++ i) { // iterate for every dot
yp += sty;
if (yp > doc_height-50) {
xp = Math.random()*(doc_width-am-30);
yp = 0;
stx = 0.02 + Math.random()/10;
sty = 0.7 + Math.random();
doc_width = ns6up?window.innerWidth : document.body.clientWidth;
doc_height = ns6up?window.innerHeight : document.body.clientHeight;
}
dx += stx;
if (ie4up){
document.all["dot"+i].style.pixelTop = yp;
document.all["dot"+i].style.pixelLeft = xp + am*Math.sin(dx);
}
else if (ns6up){
document.getElementById("dot"+i).style.top=yp;
document.getElementById("dot"+i).style.left=xp + am*Math.sin(dx);
}
}
setTimeout("snowIE_NS6()", 10);
}
if (ns4up) {
snowNS();
} else if (ie4up||ns6up) {
snowIE_NS6();
}
</script>
(lease en plan coña) 
