/*
Snow Effect Script
Submitted by Altan d.o.o. (snow@altan.hr, http://www.altan.hr/snow/index.html)
*/


  //Configure below to change URL path to the snow image
  var snowsrc="snow.gif";
  // Configure below to change number of snow to render
  var no = 4;

  var ns4up = (document.layers) ? 1 : 0;  // browser sniffer
  var ie4up = (document.all) ? 1 : 0;
  var ns6up = (document.getElementById&&!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||ns6up) {
    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 quoi;

  for (i = 0; i < no; ++ i)
  {
  	// iterate for every dot
    //quoi = round(Math.random()*4);
    //snowsrc="images/snowflocon.gif";

// étoiles    
		if (i == 0) snowsrc="images/greenstar.gif";
    if (i == 1) snowsrc="images/bluestar1.gif";
    if (i == 2) snowsrc="images/bluestar2.gif";
    if (i == 3) snowsrc="images/bluestar3.gif";



// neige d'hiver
//		if (i == 0) snowsrc="snow0.gif";
//    if (i == 1 || i == 2) snowsrc="snow1.gif";
//    if (i == 6 || i == 7 || i == 8 || i == 9) snowsrc="snow.gif";


// feuilles d'automne
//		if (i == 0) snowsrc="snow0.gif";
//    if (i == 1 || i == 2) snowsrc="snow1.gif";
//    if (i == 3) snowsrc="images/leaf1.gif";
//    if (i == 6 || i == 7 || i == 8 || i == 9) snowsrc="images/bluestar2.gif";		

    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()*20;         // set amplitude variables
    stx[i] = 0.02 + Math.random()/10; // set step variables
    sty[i] = 0.7 + Math.random();     // set step variables
    if (ns4up)
    {                      // set layers
      if (i == 0)
      {
        document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><a href=\"http://mpv.free.fr/\"><img src='"+snowsrc+"' border=\"0\"></a></layer>");
      }
      else
      {
        document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src='"+snowsrc+"' border=\"0\"></layer>");
      }
    }
    else
    if (ie4up||ns6up)
    {
      if (i == 0)
      {
        document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><a href=\"http://mpv.free.fr\"><img src='"+snowsrc+"' border=\"0\"></a></div>");
      }
      else
      {
        document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+snowsrc+"' border=\"0\"></div>");
      }
    }
  }

  function snowNS()
  {  // Netscape main animation function
    for (i = 0; i < no; ++ i)
    {
      yp[i] += sty[i];
      if (yp[i] > doc_height-50)
      {
        xp[i] = Math.random()*(doc_width-am[i]-30);
        yp[i] = 0;
        stx[i] = 0.02 + Math.random()/10;
        sty[i] = 0.7 + Math.random();
        doc_width = self.innerWidth;
        doc_height = self.innerHeight;
      }
      dx[i] += stx[i];
      document.layers["dot"+i].top = yp[i];
      document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i]);
    }
    setTimeout("snowNS()", 10);
  }

  function snowIE_NS6() {  // IE and NS6 main animation function
    for (i = 0; i < no; ++ i) {  // iterate for every dot
      yp[i] += sty[i];
      if (yp[i] > doc_height-50) {
        xp[i] = Math.random()*(doc_width-am[i]-30);
        yp[i] = 0;
        stx[i] = 0.02 + Math.random()/10;
        sty[i] = 0.7 + Math.random();
        doc_width = ns6up?window.innerWidth : document.body.clientWidth;
        doc_height = ns6up?window.innerHeight : document.body.clientHeight;
      }
      dx[i] += stx[i];
      if (ie4up){
      document.all["dot"+i].style.pixelTop = yp[i];
      document.all["dot"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]);
      }
      else if (ns6up){
      document.getElementById("dot"+i).style.top=yp[i];
      document.getElementById("dot"+i).style.left=xp[i] + am[i]*Math.sin(dx[i]);
      }
    }
    setTimeout("snowIE_NS6()", 10);
  }

  if (ns4up) {
    snowNS();
  } else if (ie4up||ns6up) {
    snowIE_NS6();
  }