var no = 15; // Anzahl der Bilder
var xp, yp;    // Koordination- und Positionsvariablen
var i, doc_width = 800, doc_height = 600;
var st, w;

// Browseridentifizierung
var ns4up = (document.layers) ? 1 : 0;
var ie4up = (document.all) ? 1 : 0;

if (ns4up)
  {
  doc_width = self.innerWidth;
  doc_height = self.innerHeight-26;
  }
else if (ie4up)
  {
  doc_width = document.body.clientWidth;
  doc_height = document.body.clientHeight-26;
  }

xp = new Array();
yp = new Array();
st = new Array();
pic = new Array();

// Bilderquellen
pic[0]="/schnee2.gif"
pic[1]="/schnee2.gif"
pic[2]="/schnee2.gif"
pic[3]="/schnee2.gif"
pic[4]="/schnee2.gif"
pic[5]="/schnee2.gif"
pic[6]="/schnee2.gif"
pic[7]="/schnee2.gif"
pic[8]="/schnee2.gif"
pic[9]="/schnee2.gif"
pic[10]="/schnee2.gif"
pic[11]="/schnee2.gif"
pic[12]="/schnee2.gif"
pic[13]="/schnee2.gif"
pic[14]="/schnee2.gif"

// Sinkgeschwindigkeit
st[0]=1
st[1]=1.1
st[2]=1.2
st[3]=2
st[4]=2.1
st[5]=2.2
st[6]=3
st[7]=3.1
st[8]=3.2
st[9]=4
st[10]=4.1
st[11]=4.2
st[12]=5
st[13]=5.1
st[14]=5.2

w = 3.14 / 360 * 2;  //winkelfunktion

for (i = 0; i < no; ++ i)
  {
  xp[i]=Math.random()*(doc_width-35);
  yp[i]=Math.random()*(doc_height-20);

// Bereiche anlegen
if (ns4up)
  {
  document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src=\"/images/" + pic[i] + "\" border=\"0\"><\/layer>");
  }
else if (ie4up)
  {
  document.write("<div id=\"dot"+ i +"\" style=\"position: absolute; z-index: "+ i +"; visibility: visible; top: 15px; left: 15px;\"><img src=\"/images" + pic[i] + "\" border=\"0\"><\/div>");
  }
  }

// Animationsfunktion fuer Netscape
function snowNS()
  {
  for (i = 0; i < no; ++ i)   // Ein Schleifendurchlauf fuer jedes Objekt
    {
    yp[i] = yp[i] + st[i];
    xp[i] = xp[i] + Math.sin(yp[i]*w+st[i])*2;
    if (yp[i] > doc_height)
      {
      xp[i]=Math.random()*(doc_width-35);
      yp[i]=0;
      }
    document.layers["dot"+i].top = yp[i];
    document.layers["dot"+i].left = xp[i];
    }
  setTimeout("snowNS()", 20);
  }

// Animationsfunktion fuer Internet Explorer
function snowIE()
  {
  for (i = 0; i < no; ++ i)  // Ein Schleifendurchlauf fuer jedes Objekt
    {
    yp[i] = yp[i] + st[i];
    xp[i] = xp[i] + Math.sin(yp[i]*w+st[i])*2;
    if (yp[i] > doc_height)
      {
      xp[i]=Math.random()*(doc_width-35);
      yp[i]=0;
      }
    document.all["dot"+i].style.pixelTop = yp[i];
    document.all["dot"+i].style.pixelLeft = xp[i];
    }
  setTimeout("snowIE()", 20);
  }

if (ns4up) {snowNS();}
else if (ie4up) {snowIE();}