(function (){
	var snow=new Array()
	var marginbottom
	var marginright
	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
	
	var sinkspeed=(ie5?1.0:1.5);	// speed
	var snowmax=45
	var snowcolor=new Array("#AAAACC","#DDDDFF","#CCCCDD","#F3F3F3","#F0FFFF")
	var snowtype=new Array("Arial Black","Arial Narrow","Times","Verdana")
	var snowletter="*"
	var snowmaxsize=22
	var snowminsize=4
	var snowingzone=1
	
	
	var _display_ ;	// for IE
	
	function randommaker(range) {		
		rand=Math.floor(range*Math.random())
		return rand
	}
	function initsnow() {
		if (navigator.userAgent.indexOf("MSIE") != -1) {	// IE
			if (!_display_){
				_display_ = document.createElement('div');
				_display_.style.position='absolute'; 
				document.body.insertBefore(_display_,document.body.childNodes[0]);
			}
			for (i=0;i<=snowmax;i++)
				_display_.innerHTML += "<span id='s"+i+"' style='position:absolute;top:-"+snowmaxsize+"'>"+snowletter+"</span>";
		}
		
		if (ie5 || opera) {
			marginbottom = document.body.clientHeight
			marginright = document.body.clientWidth
			window.onscroll = function (){_display_.style.marginTop = document.body.scrollTop;}
		}
		else if (ns6) {
			marginbottom = window.innerHeight
			marginright = window.innerWidth
		}
		var snowsizerange=snowmaxsize-snowminsize
		for (i=0;i<=snowmax;i++) {
			crds[i] = 0;                      
			lftrght[i] = Math.random()*15;         
			x_mv[i] = 0.03 + Math.random()/10;
			snow[i]=document.getElementById("s"+i)
			snow[i].style.fontFamily=snowtype[randommaker(snowtype.length)]
			snow[i].size=randommaker(snowsizerange)+snowminsize
			snow[i].style.fontSize=snow[i].size
			snow[i].style.color=snowcolor[randommaker(snowcolor.length)]
			snow[i].sink=sinkspeed*snow[i].size/5
			if (snowingzone==1) {snow[i].posx=randommaker(marginright-snow[i].size)}
			if (snowingzone==2) {snow[i].posx=randommaker(marginright/2-snow[i].size)}
			if (snowingzone==3) {snow[i].posx=randommaker(marginright/2-snow[i].size)+marginright/4}
			if (snowingzone==4) {snow[i].posx=randommaker(marginright/2-snow[i].size)+marginright/2}
			snow[i].posy=randommaker(2*marginbottom-marginbottom-2*snow[i].size)
			snow[i].style.left=snow[i].posx
			snow[i].style.top=snow[i].posy;
		}
		setTimeout(movesnow,0);
	}
	function movesnow() {
		for (i=0;i<=snowmax;i++){
			crds[i] += x_mv[i];
			snow[i].posy+=snow[i].sink
			snow[i].style.left=snow[i].posx+lftrght[i]*Math.sin(crds[i]);
			snow[i].style.top=snow[i].posy
			
			if (snow[i].posy>=marginbottom-2*snow[i].size || parseInt(snow[i].style.left)>(marginright-3*lftrght[i])){
				if (snowingzone==1) {snow[i].posx=randommaker(marginright-snow[i].size)}
				if (snowingzone==2) {snow[i].posx=randommaker(marginright/2-snow[i].size)}
				if (snowingzone==3) {snow[i].posx=randommaker(marginright/2-snow[i].size)+marginright/4}
				if (snowingzone==4) {snow[i].posx=randommaker(marginright/2-snow[i].size)+marginright/2}
				snow[i].posy=0
			}
		}
		var timer=setTimeout(movesnow,0);
	}
	if (navigator.userAgent.indexOf("MSIE") == -1) {
		for (i=0;i<=snowmax;i++) {
			document.write("<span id='s"+i+"' style='position:fixed;top:-"+snowmaxsize+"'>"+snowletter+"</span>");	
		}
	}
	
	if (browserok) {
		window.onload=initsnow
	}
})()