var snowmax=100;
var snowcolor=new Array("#AAAACC","#DDDDFF","#CCCCDD","#F3F3F3","#F0FFFF");
var snowtype=new Array("Arial Black","Arial Narrow","Times","Comic Sans MS");
var snowletter="*";
var sinkspeed=0.6
var snowminsize=8;
var snowmaxsize=22;

// Set the snowing-zone
// Set 1 for all-over-snowing, set 2 for left-side-snowing 
// Set 3 for center-snowing, set 4 for right-side-snowing
var snowingzone=1;


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;

function randommaker(range){		
	rand=Math.floor(range*Math.random());
    return rand
}

function initsnow(){
	if (ie5 || opera){
		marginbottom = document.body.clientHeight;
		marginright = document.body.clientWidth;
	}
	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;
	}
	movesnow()
}

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()",50);
}

for(i=0;i<=snowmax;i++)document.write('<SPAN ID="s'+i+'" STYLE="position:absolute;top:-'+snowmaxsize+'">'+snowletter+'</SPAN>');

if(browserok)window.onload=initsnow;