javascript snow falling effect

 <style type="text/css">

.snow {
position:absolute;
layer-background-color:lightblue;
visibility:visible;
top:-50px;
font-size:1px;
background-color:lightblue;
}

</style>

Place this code any where in body of the blog.

<script language="javascript">

var snowflakes=50; //NUMBER OF OBJECTS YOU WANT.
var level=2; //SPEED LEVEL 1 to 5. 1=SLOWER, 5=FASTER

var w3c=(document.getElementById)?true:false;
var ns4=(document.layers)?true:false;
var ie4=(document.all && !w3c)?true:false;
var ie5=(document.all && w3c)?true:false;
var ns6=(w3c && navigator.appName.indexOf("Netscape")>=0)?true:false;
var t='';
var w_x, w_y;
var snow=new Array();
for(i=1;i<=snowflakes;i++)t+='<div id="snow'+i+'" class="snow"></div>';
document.write(t);

function getstartpos(obj){
obj.size=Math.floor(Math.random()*5)+1
obj.ystep=obj.size*level;
obj.xstep=obj.ystep/5;
if(ns4)obj.clip.width=obj.clip.height=obj.size;
else obj.style.width=obj.style.height=obj.size;
moveidto(obj,Math.floor(Math.random()*w_x)-obj.size,0);
}

function movedrop(){
for(i=1;i<=snowflakes;i++){
var l=(ns4)?snow[i].left:parseInt(snow[i].style.left);
var t=(ns4)?snow[i].top:parseInt(snow[i].style.top);
var pxo=(ie4||ie5)?document.body.scrollLeft:pageXOffset;
var pyo=(ie4||ie5)?document.body.scrollTop:pageYOffset;
if( (t+snow[i].ystep+snow[i].size>=w_y+pyo) || (snow[i].xpos-snow[i].size<pxo)) getstartpos(snow[i]);
else moveidto(snow[i], l-snow[i].xstep, t+snow[i].ystep);
}}

function getwindowdims(){
w_x=(ie4||ie5)? document.body.clientWidth:window.innerWidth;
w_y=(ie4||ie5)? document.body.clientHeight:window.innerHeight;
}

function moveidto(id,x,y){
if(ns4)id.moveTo(x,y);
else{
id.style.left=x+'px';
id.style.top=y+'px';
}}

window.onresize=function(){
if(ns4)setTimeout('history.go(0)',400);
else getwindowdims();
}

window.onload=function(){
level=Math.max(Math.min(5,level),1)
getwindowdims();
for(i=1;i<=snowflakes;i++){
snow[i]=(ns4)?document.layers['snow'+i]:(ie4)?document.all['snow'+i]:document.getElementById('snow'+i);
getstartpos(snow[i]);
moveidto(snow[i],Math.floor(Math.random()*(w_x-10)),Math.floor(Math.random()*(w_y-10)));
}
setInterval('movedrop()',50);
}
</script>

After all you get snall fall effect on your website.and snow start falling on every page . I suggest you to put code in sidebar of the website by which you can get effect on every page other wise your code active on that page where you put this link.