// CREDITS:
// Snowing Links
// By Peter Gehrig
// Copyright (c) 2004 Peter Gehrig. All rights reserved.
// Permission given to use the script provided that this notice remains as is.
// Additional scripts can be found at http://www.24fun.com
// info@24fun.com
// 10/27/2004

// IMPORTANT:
// If you add this script to a script-library or script-archive
// you have to add a highly visible link to
// http://www.24fun.com on the webpage
// where this script will be featured

///////////////////////////////////////////////////////////////////////////
// CONFIGURATION STARTS HERE
///////////////////////////////////////////////////////////////////////////

// Set the number of snowflakes (more than 30 - 40 not recommended)
var snowmax=35

// Set the colors for the snow. Add as many colors as you like
var snowcolor=new Array("#aaaacc","#ddddFF","#ccccDD")

// Set the fonts, that create the snowflakes. Add as many fonts as you like
var snowtype=new Array("Arial Black","Arial Narrow","Times","Comic Sans MS")

// Set the letter that creates your snowflake (recommended:*)
var snowletter="*"

// Set the speed of sinking (recommended values range from 0.3 to 2)
var sinkspeed=0.6

// Set the maximal-size of your snowflaxes
var snowmaxsize=22

// Set the minimal-size of your snowflaxes
var snowminsize=8

// Set the width of the snowing-zone (pixels)
var snowboxwidth=100

///////////////////////////////////////////////////////////////////////////
// CONFIGURATION ENDS HERE
///////////////////////////////////////////////////////////////////////////

// Do not edit below this line
var snow=new Array()
var marginbottom
var marginright
var marginleft
var margintop
var snowingzone=1
var posleft
var postop
var is_snowing=false
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 startsnow() {
	is_snowing=true
	if (ie5 || opera) {
		margintop = postop+15
		marginbottom = document.body.clientHeight
		marginleft = posleft
		marginright = posleft+snowboxwidth
	}
	else if (ns6) {
		margintop = postop+15
		marginbottom = window.innerHeight
		marginleft = posleft
		marginright = posleft+snowboxwidth
	}
	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
		snow[i].posx=randommaker(snowboxwidth)+marginleft-2*snow[i].size
		if (ie5 || opera) {
			if (snow[i].posx>=document.body.clientWidth-2*snow[i].size) { 
				snow[i].posx=snow[i].posx-snowboxwidth
			}
		}
		if (ns6) {
			if (snow[i].posx>=window.innerWidth-2*snow[i].size) { 
				snow[i].posx=snow[i].posx-snowboxwidth
			}
		}
		snow[i].posy=randommaker(marginbottom-margintop)+margintop-2*snow[i].size
		snow[i].style.left=snow[i].posx
		snow[i].style.top=snow[i].posy
		snow[i].style.visibility="visible";
		
	}
	movesnow()
}

function stopsnow() {
	is_snowing=false
}

function movesnow() {
	if (is_snowing) {
		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])){
				snow[i].posx=randommaker(snowboxwidth)+marginleft-2*snow[i].size
				if (ie5 || opera) {
					if (snow[i].posx>=document.body.clientWidth-2*snow[i].size) { 
						snow[i].posx=snow[i].posx-snowboxwidth
					}
				}
				if (ns6) {
					if (snow[i].posx>=window.innerWidth-2*snow[i].size) { 
						snow[i].posx=snow[i].posx-snowboxwidth
					}		
				}
				snow[i].posy=randommaker(marginbottom-margintop)+margintop-2*snow[i].size
			}
		}
		var timer=setTimeout("movesnow()",50)
	}
	else {
		for (i=0;i<=snowmax;i++) {
			snow[i].style.visibility="hidden";
		}
	}
}

function getcoordinates(e) {
	if (ie5 || opera) {
		posleft=document.body.scrollLeft+window.event.x;
		postop=document.body.scrollTop+window.event.y;
	}
	if (ns6) {
		posleft=e.pageX
		postop=e.pageY
	}
}

for (i=0;i<=snowmax;i++) {
	document.write("<span id='s"+i+"' style='position:absolute;top:-"+snowmaxsize+"'>"+snowletter+"</span>")
}
if (browserok) {
	document.onmousemove=getcoordinates
}