snow.js

snow.js

/*
Snow Fall 1 - no images - Java Script
Visit http://rainbow.arch.scriptmania.com/scripts/
  for this script and many more
*/

// 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("#c0f3f4","#ddfffa","#d7fde2","#f3f3f3","#f0ffff", "#ffffff");

// Set the fonts, that create the snowflakes. Add as many fonts as you like
var snowtype=new Array("Times","Arial","Times","Verdana");

// 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 maximum-size of your snowflakes
var snowmaxsize=80;

// Set the minimal-size of your snowflakes
var snowminsize=15;

// 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;

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


// Do not edit below this line
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.scrollHeight;
        marginright = document.body.clientWidth-15;
    }
    else if (ns6) {
        marginbottom = document.body.scrollHeight;
        marginright = window.innerWidth-15;
    }
    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+'px';
        snow[i].style.color=snowcolor[randommaker(snowcolor.length)];
        snow[i].style.zIndex=1000;
        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+'px';
        snow[i].style.top=snow[i].posy+'px';
    }
    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])+'px';
        snow[i].style.top=snow[i].posy+'px';

        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++) {
       $("body").append("<span id='s"+i+"' style='z-index:99999999;position:absolute;top:-"+snowmaxsize+"'>"+snowletter+"</span>");
}
initsnow();

This is good help, please continue