// Snow - http://www.btinternet.com/~kurt.grigg/javascript
// Traduction en français: Prof TNJ

//Rain/Snow effect- By Craig Blanchette Craiga.topcities.com
	

if  ((document.getElementById) &&
window.addEventListener || window.attachEvent){

(function(){

// Configuration ici :

var nombrefl = 30;  // Nombre de flocons
var temps = 30; // Vitesse de la chute - varie en fonction du navigateur et du contenu de la page
var enableinNS6 = 1 // Permet au script de fonctionner avec NS6/Mozilla? L'animation risque d'être plus lente avec ces navigateurs. (1 = oui, 0 = non).

// Ne rien modifier à partir d'ici :

var y = [];
var x = [];
var chute = [];
var LesFlocons = [];
var sfs = [];
var step = [];
var currStep = [];
var h,w,r;
var d = document;
var pix = "px";
var domWw = (typeof window.innerWidth == "number");
var domSy = (typeof window.pageYOffset == "number");
var idx = d.getElementsByTagName('div').length;

if (d.documentElement.style &&
typeof d.documentElement.style.MozOpacity == "string")
nombrefl = 12;

for (i = 0; i < nombrefl; i++){
sfs[i] = Math.round(1 + Math.random() * 1);

document.write('<div id="flake'+(idx+i)+'" style="position:absolute;top:0px;left:0px;width:'
+sfs[i]+'px;height:'+sfs[i]+'px;background-color:#ffffff;font-size:'+sfs[i]+'px"><\/div>');

currStep[i] = 0;
chute[i] = (sfs[i] == 1)?
Math.round(2 + Math.random() * 2): Math.round(3 + Math.random() * 2);
step[i] = (sfs[i] == 1)?
0.05 + Math.random() * 0.1 : 0.05 + Math.random() * 0.05 ;
}


if (domWw) r = window;
else{
  if (d.documentElement &&
  typeof d.documentElement.clientWidth == "number" &&
  d.documentElement.clientWidth != 0)
  r = d.documentElement;
 else{
  if (d.body &&
  typeof d.body.clientWidth == "number")
  r = d.body;
 }
}


function winsize(){
var oh,sy,ow,sx,rh,rw;
if (domWw){
  if (d.documentElement && d.defaultView &&
  typeof d.defaultView.scrollMaxY == "number"){
  oh = d.documentElement.offsetHeight;
  sy = d.defaultView.scrollMaxY;
  ow = d.documentElement.offsetWidth;
  sx = d.defaultView.scrollMaxX;
  rh = oh-sy;
  rw = ow-sx;
 }
 else{
  rh = r.innerHeight;
  rw = r.innerWidth;
 }
h = rh - 2; 
w = rw - 2;
}
else{
h = r.clientHeight - 2;
w = r.clientWidth - 2;
}
}


function scrl(yx){
var y,x;
if (domSy){
 y = r.pageYOffset;
 x = r.pageXOffset;
 }
else{
 y = r.scrollTop;
 x = r.scrollLeft;
 }
return (yx == 0)?y:x;
}


function snow(){
var dy,dx;

for (i = 0; i < nombrefl; i++){
 dy = chute[i];
 dx = chute[i] * Math.cos(currStep[i]);

 y[i]+=dy;
 x[i]+=dx;

 if (x[i] >= w || y[i] >= h){
  y[i] = -10;
  x[i] = Math.round(Math.random() * w);
  chute[i] = (sfs[i] == 1)?
  Math.round(2 + Math.random() * 2): Math.round(3 + Math.random() * 2);
  step[i] = (sfs[i] == 1)?
  0.05 + Math.random() * 0.1 : 0.05 + Math.random() * 0.05 ;
 }
 
 LesFlocons[i].top = y[i] + scrl(0) + pix;
 LesFlocons[i].left = x[i] + scrl(1) + pix;

 currStep[i]+=step[i];
}
setTimeout(snow,temps);
}


function init(){
winsize();
for (i = 0; i < nombrefl; i++){
 LesFlocons[i] = document.getElementById("flake"+(idx+i)).style;
 y[i] = Math.round(Math.random()*h);
 x[i] = Math.round(Math.random()*w);
}
snow();
}


if (window.addEventListener){
 window.addEventListener("resize",winsize,false);
 window.addEventListener("load",init,false);
} 
else if (window.attachEvent){
 window.attachEvent("onresize",winsize);
 window.attachEvent("onload",init);
}

})();
}
// FIN






snow = true;    // false-rain;   true-snow
snowsym = " * "  //These are the symbols for each
rainsym = " ' "  //You can put images here.
howmany = 10     //How many drops/snowflakes?

/**************Do not need to change anything below***********/
if(snow){sym = snowsym; speed=1; angle=10; drops=howmany}
else{sym = rainsym; speed=50; drops=howmany; angle=6}
movex = -speed/angle; movey = speed; count = 0;

function moverain(){
for(move = 0; move < drops; move++){
xx[move]+=movex;  yy[move]+=mv[move];
hmm = Math.round(Math.random()*1);
if(xx[move] < 0){xx[move] = maxx+10;}
if(yy[move] > maxy){yy[move] = 10;}
drop[move].left = xx[move]
drop[move].top = yy[move]+document.body.scrollTop;
}setTimeout('moverain()','1')}