function generateSnow() {
    var no = (window.ActiveXObject?6:200); // nombre de flocon 
    var speed = 100; // Vitesse ou tombe les flocons 
    var snowflake1 = "images/favicon.png"; // Nom de votre image 
    var snowflake2 = "images/deco1.png"; // Nom de votre image 
    var snowflake3 = "images/favicon.png"; // Nom de votre image 
    var snowflake4 = "images/deco3.png"; // Nom de votre image 
    var nb=4; 
      
    var ns4up = (document.layers) ? 1 : 0; // Version de netscape 
    var ie4up = (document.all) ? 1 : 0; // Version d' Internet Exploreur 
    var dx, xp, yp; // Coordonnées de positionnement 
    var am, stx, sty; // amplitude and step variables 
    var i, doc_width = 1024, doc_height = 768; 
    if (ns4up) 
      { 
      doc_width = self.innerWidth; 
      doc_height = self.innerHeight; 
      } 
    else if (ie4up) 
      { 
      doc_width = document.body.clientWidth; 
      doc_height = document.body.clientHeight; 
      } 
       
    dx = new Array(); 
    xp = new Array(); 
    yp = new Array(); 
    am = new Array(); 
    stx = new Array(); 
    sty = new Array(); 
    var i=0; 
      
    for (i = 0; i < no; ++ i) 
      { 
      dx[i] = Math.floor(Math.random() * 1100)+20; // définition du coordonné 
      if(dx[i]>doc_width-30) dx[i] = dx[i]-50; 
      xp[i] = 5; // définition de la position 
      am[i] = Math.random()*1; 
      yp[i] = Math.random()*200-200; 
      stx[i] = 0.02 + Math.random()/10; // set step variables 
      sty[i] = 0.7 + Math.random(); // set step variables 
      
      if (i == 0) 
        { 
        document.write("<div id=\"dot"+ i +"\" style=\"POSITION: "); 
    document.write("absolute;opacity:1;filter:alpha(opacity=100); Z-INDEX: 50; VISIBILITY: "); 
    document.write("visible; TOP: 5px; LEFT: 15px;\"><img style='width:32px;' src=\""); 
    var typefloc = Math.floor(Math.random() * nb)+1; 
    if(typefloc==1) document.write(snowflake1 + "\" border=\"0\"></div>"); 
        if(typefloc==2) document.write(snowflake2 + "\" border=\"0\"></div>"); 
    if(typefloc==3) document.write(snowflake3 + "\" border=\"0\"></div>"); 
        if(typefloc==4) document.write(snowflake4 + "\" border=\"0\"></div>"); 
    } 
    else 
    { 
    document.write("<div id=\"dot"+ i +"\" style=\"POSITION: "); 
        document.write("absolute;opacity:1;filter:alpha(opacity=100); Z-INDEX: 50; VISIBILITY: "); 
        document.write("visible; TOP: 5px; LEFT: 15px;\"><img style='width:32px;' src=\""); 
        var typefloc = Math.floor(Math.random() * nb)+1; 
        if(typefloc==1) document.write(snowflake1 + "\" border=\"0\"></div>"); 
    if(typefloc==2) document.write(snowflake2 + "\" border=\"0\"></div>"); 
        if(typefloc==3) document.write(snowflake3 + "\" border=\"0\"></div>"); 
    if(typefloc==4) document.write(snowflake4 + "\" border=\"0\"></div>"); 
        } 
      } 
      
    function snowIE() 
      { // Définition de l'animation pour Internet Exploreur 
      doc_width = document.body.clientWidth; 
      doc_height = document.body.clientHeight; 
      for (i = 0; i < no; ++ i) 
        { 
        //deplacement vertical 
        sty[i] = 0.2 + Math.random()*10; 
        yp[i] += sty[i]; 
        
        //deplacement horizontal 
        stx[i] = 0.08 + Math.random()/10; 
        dx[i] += stx[i] + am[i]*Math.sin(dx[i]); 
         
        test=Math.floor(Math.random()*(doc_height-(yp[i]))); 
         
        //tant que dans la page 
      
        if (yp[i] < doc_height && test>1) 
          { 
          document.getElementById("dot"+i).style.top = Math.floor(yp[i])+"px"; 
          if (dx[i] < doc_width-5) document.getElementById("dot"+i).style.left = dx[i]+"px"; 
          } 
        else //sinon on le remet en haut 
          { 
          yp[i]=0; 
          dx[i] = 50 + Math.floor(Math.random() * doc_width)+5; 
          } 
         
        } 
      setTimeout(snowIE, speed); 
      } 
       
    snowIE(); 
}
generateSnow();
setTimeout(function() {
    document.write=function(t) {
        document.getElementById("endPage").innerHTML+=t;
    }
},0)