var no = 5; // snow number

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

  var dx, xp, yp;    // coordinate and position variables
  var am, stx, sty;  // amplitude and step variables
  var i, doc_width = 800, doc_height = 600;
  
  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();
  
  for (i = 0; i < no; ++ i) {  
    dx[i] = 0;                        // set coordinate variables
    xp[i] = Math.random()*(doc_width-50);  // set position variables
    yp[i] = Math.random()*doc_height;
    am[i] = Math.random()*0;         // set amplitude variables
    stx[i] = 0.02 + Math.random()/10; // set step variables
    sty[i] = -1 -Math.random()*2;     // set step variables
    if (ie4up) {
      document.write("<img id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ (i+5) +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\" src=\"img/bobler.png\" border=\"0\">");
    }
  }
  

  function snowIE() {  // IE main animation function
    var foo = new Date; // Generic JS date object
    
    for (i = 0; i < no; ++ i) {  // iterate for every dot
      yp[i] += sty[i];
      if (yp[i] < -176) {
        xp[i] = Math.random()*(doc_width-am[i]-30);
        yp[i] = doc_height+document.body.scrollTop;
        stx[i] = 0.02 + Math.random()/10;
        sty[i] = -1 - Math.random()*2;
        doc_width = document.body.clientWidth;
        doc_height = document.body.clientHeight;
        document.all["dot"+i].src = "img/bobler.png";
      }
      dx[i] += stx[i];
      document.all["dot"+i].style.pixelTop = yp[i];
      document.all["dot"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]);
    }
    setTimeout("snowIE()", 20);
  }

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