<script type="text/javascript">
/*
Snow Script
Visit <a href='http://dan-blog.ro/'>Dan Blog</a> for this script and many more...
*/
var snowmax = 30;
var snowcolor = new Array("#aaaacc", "#ddddFF", "#ccccDD");
var snowtype = new Array("Arial Black", "Arial Narrow", "Times", "Comic Sans MS");
var snowletter = "*";
var sinkspeed = 0.9;
var snowmaxsize = 30;
var snowminsize = 10;
var snowingzone = 1;
var snow = new Array();
var marginbottom;
var marginright;
var ScrollTop;
var timer;
var i_snow = 0;
var x_mv = new Array();
var crds = new Array();
var lftrght = new Array();
var browserinfos = navigator.userAgent;
var ie5 = document.all && document.getElementById && !browserinfos.match(/Opera/);
var ns6 = document.getElementById && !document.all;
var opera = browserinfos.match(/Opera/);
var browserok = ie5 || ns6 || opera;
function randommaker(a)
{
    rand = Math.floor(a * Math.random());
    return rand
}
function iecompattest()
{
	return (document.compatMode && document.compatMode != "BackCompat") ? document.documentElement : document.body
}
function InitHeight() {
	if (ie5 || opera) {
		marginbottom = iecompattest().clientHeight + 5; //clientHeight;
		marginright = iecompattest().scrollWidth + 5; //clientWidth
	}
	else {
		if (ns6) {
			marginbottom = self.innerHeight;
			marginright = self.innerWidth
		}
	}
	ScrollTop = document.body.scrollTop;
	if (ScrollTop == 0) {
		if (window.pageYOffset)
			ScrollTop = window.pageYOffset;
		else
			ScrollTop = (document.body.parentElement) ? document.body.parentElement.scrollTop : 0;
	}
	marginbottom += ScrollTop;
}
function initsnow()
{
	InitHeight()
  var a = snowmaxsize - snowminsize;
  for (i = 0;i <= snowmax;i++)
	{
		crds<em> = 0;
		lftrght<em> = Math.random() * 15;
		x_mv<em> = 0.03 + Math.random() / 10;
		snow<em> = document.getElementById("s" + i);
		snow<em>.style.fontFamily = snowtype[randommaker(snowtype.length)];
		snow<em>.size = randommaker(a) + snowminsize;
		snow<em>.style.fontSize = snow<em>.size + "px";
		snow<em>.style.color = snowcolor[randommaker(snowcolor.length)];
		snow<em>.sink = sinkspeed * snow<em>.size / 5;
		if (snowingzone == 1) { snow<em>.posx = randommaker(marginright - snow<em>.size) }
		if (snowingzone == 2) { snow<em>.posx = randommaker(marginright / 2 - snow<em>.size) }
		if (snowingzone == 3) { snow<em>.posx = randommaker(marginright / 2 - snow<em>.size) + marginright / 4 }
		if (snowingzone == 4) { snow<em>.posx = randommaker(marginright / 2 - snow<em>.size) + marginright / 2 }
		snow<em>.posy =  randommaker(2 * marginbottom - marginbottom - 2 * snow<em>.size);
		snow<em>.style.left = snow<em>.posx + "px";
		snow<em>.style.top = snow<em>.posy + "px"
  }
  movesnow()
}

function movesnow()
{
	InitHeight();
	for (i = 0; i <= snowmax; i++)
	{
		crds<em> += x_mv<em>;
		snow<em>.posy += snow<em>.sink;
		snow<em>.style.left = snow<em>.posx + lftrght<em> * Math.sin(crds<em>) + "px";
		snow<em>.style.top = snow<em>.posy + "px";
		if (snow<em>.posy >= marginbottom - 2 * snow<em>.size || parseInt(snow<em>.style.left) > (marginright - 3 * lftrght<em>))
		{
			if (snowingzone == 1) { snow<em>.posx = randommaker(marginright - snow<em>.size) }
			if (snowingzone == 2) { snow<em>.posx = randommaker(marginright / 2 - snow<em>.size) }
			if (snowingzone == 3) { snow<em>.posx = randommaker(marginright / 2 - snow<em>.size) + marginright / 4 }
			if (snowingzone == 4) { snow<em>.posx = randommaker(marginright / 2 - snow<em>.size) + marginright / 2 }
			snow<em>.posy = ScrollTop
		}
	}
	var a = setTimeout("movesnow()", 60)
}
function hidesnow()
{
	if (window.timer)	{ clearTimeout(timer) }
	for (i = 0;i <= snowmax;i++)
	{
		document.getElementById("s" + i).style.visibility = "hidden"
	}
}
for (i = 0;i <= snowmax;i++)
{
	document.write('<div id="s' + i + '" style="POSITION: absolute; Z-INDEX: 9' + i + "; VISIBILITY: visible; TOP:-" + snowmaxsize + 'px; LEFT: 15px;">' + snowletter + "</div>")
}
if (browserok)
{ initsnow() }
else
{ document.write('Votre navigateur ne supporte pas ce Javascript, ') };
</script>
Succes la instalare.  8)

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Cauta in unul dintre fisierele temei tale (de obicei e prin header.php, header.tpl, etc...), urmatorul cod:

</head>

Deasupra acelui cod, adaugi scriptul pentru ninsoare/fulgi de zapada.